scholarly journals The Effect of Antenatal Care Service Utilization on Postnatal Care Service Utilization: A Systematic Review and Meta-analysis Study

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Alehegn Bishaw Geremew ◽  
Moges Muluneh Boke ◽  
Ayenew Engida Yismaw
Keyword(s):  
Antenatal Care ◽  
Service Utilization ◽  
Postnatal Care ◽  
Service Use ◽  
Care Service ◽  
Meta Analysis ◽  
Random Effect Model ◽  
Cochrane Library ◽  
Forest Plot ◽  
Analysis Study

Introduction. Reduction of maternal and neonatal morbidity and mortality has continued to be a challenge in developing countries. The majority of maternal and neonatal mortality occurred during the early postpartum period. This is mostly due to low postnatal care service utilization. There is a discrepancy of evidence on the effect status of antenatal care on the improvement of postnatal care service utilization. Therefore, this review study is aimed at estimating the pooled effect of antenatal care on postnatal care service utilization. Methods. We searched from PubMed and Cochrane library database, Google Scholar, and Google. Initially, we found 265 articles; after duplication was removed and screened by the relevance of the titles and abstracts, 36 studies were considered for assessment of eligibility. Finally, 14 articles passed the inclusion and exclusion criteria and are included in the meta-analysis. Study quality assessment was done using Janna Briggs Institute (JBI) critical appraisal tools. The main information was extracted from each study. Heterogeneity of studies was assessed using I2=70% and more considered having high heterogeneity. The publication bias was checked using funnel plot and big test. Meta-analysis using a random effect model was conducted. A forest plot was used to show the estimated size effect of odds ratio with a 95% confidence interval. Results. A total of 14 articles were included with 15,765 participants for synthesis and meta-analysis. We found that a pooled estimate of women who had antenatal care was 1.53 times more likely to have postnatal care compared with those who had no antenatal care (AOR=1.53, 95% CI 1.38-1.70, I2=0%). Conclusions. This review results revealed a low utilization of postnatal care service. Antenatal care service utilization has a positive effect on postnatal care service utilization. Policymakers and programmers better considered more antenatal care service use as one strategy of enhancing the utilization of postnatal care service.

scholarly journals Postnatal care service utilization and associated factors in Ethiopia: A systematic review and Meta-analysis

2019 ◽  
Author(s):  
Bekalu Kassie ◽  
Melaku Desta ◽  
Habtamu Chanie ◽  
Bekele Tesfaye ◽  
Muluken Wubetu ◽  
...  
Keyword(s):  
Systematic Review ◽  
Antenatal Care ◽  
Service Utilization ◽  
Postnatal Care ◽  
Associated Factors ◽  
Care Service ◽  
Meta Analysis ◽  
Wealth Quintile ◽  
Care Services

Abstract Background: In Ethiopia, literatures are not in agreement on magnitude of utilization of postnatal care service and factors are not well identified. Hence, this systematic review and meta-analysis aimed to engender pooled evidence of magnitude of postnatal care service utilization and associated factors. Methods: For this systematic review and meta-analysis international databases such as, HINARI, PubMed, Medline, EMBASE, Google scholar and Cochrane library were used for searching studies published from 2002 to 2018 in English language. The Modified Newcastle- Ottawa quality assessment scale was used to assess the quality of studies and meta-analysis was conducted using STATA version 14. Q statistics and I2 test were used to assess the heterogeneity. The random effect model was used to estimate the pooled utilization of postnatal care at 95%CI. Result: Total of 22 articles with total samples of 42,320 women were included to this review. The pooled prevalence of postnatal care service utilization in Ethiopia was 41.5% (95%CI: 28.51-54.52). Women who attended formal education (OR, 2.37, 95%CI: 1.13, 4.97), had middle level and above household’s wealth quintile (OR, 2.57, 95%CI: 1.31,5.05), had antenatal care visit (OR, 6.72, 95%CI: 4.16, 10.87), being multigravida (OR, 0.68, 95%CI: 0.53, 0.88) and gave birth in health institutions (OR, 3.86, 95%CI: 2.89, 5.16) were high likely to utilize postnatal care services while rural resident women (OR, 0.17, 95%CI: 0.05, 0.60) were less likely to utilize postnatal care services. Conclusion: Postnatal care service utilization in Ethiopia is low (41.5%). It is affected by educational status, residence, wealth quintile, gravidity, antenatal care follow up and place of delivery. Scale up the service and awareness for rural people, improving economic status of the household, improve antenatal care follow up, and promote institutional delivery are having paramount importance. Key words: Health care service utilization, Ethiopia, systematic review, Meta-analysis

scholarly journals Women empowerment and uptake of antenatal care services : A meta-analysis of Demographic and Health Surveys from 33 Sub-Saharan African countries

2021 ◽  
Vol 79 (1) ◽  
Author(s):  
Gebretsadik Shibre ◽  
Betregiorigis Zegeye ◽  
Helena Yeboah ◽  
Ghose Bisjawit ◽  
Edward Kwabena Ameyaw ◽  
...  
Keyword(s):  
Antenatal Care ◽  
Prediction Interval ◽  
Meta Analysis ◽  
Random Effect Model ◽  
Wife Beating ◽  
Forest Plot ◽  
Demographic And Health Surveys ◽  
Women Empowerment ◽  
Sub Saharan ◽  
Skilled Anc

Abstract Background Women empowerment has been linked to increased skilled antenatal care (ANC) service use. However, there is no evidence on the net effect of women empowerment on ANC in the Sub-saharan African (SSA) region. We aim to address the knowledge gap on whether or not women empowerment positively influences the uptake of ANC at the SSA regional level. Methods We analyzed the Demographic Health Survey (DHS) datasets from 33 SSA countries. Following the DHS data analysis guideline, we measured women empowerment using two indicators. The first indicator is an index, which comprises decision-making on women’s own health, household purchase and visit to family or relatives whilst disagreeing statements that husband is justified in beating his wife constitutes the second indictor. We performed confounder-adjusted logistic regression analysis for the two indicators with ANC attendance in each of the 33 countries. Then, we pooled the adjusted Odds Ratios (OR) using the random effect model through the two-stage Individual Participant Data meta-analysis technique. Summary findings are reported in OR and corresponding 95 %CI and are presented in a forest plot. Results Moderately empowered women had marginally higher odd of skilled ANC service across the SSA region (aOR = 1.19; 95 %CI: 1.03, 1.38, with a prediction interval of 0.58, 2.45). Conversely, being involved in the three decisions (aOR = 1.15; 95 %CI: 0.99, 1.33, with prediction interval 0.57, 2.31), and attitude towards wife-beating (aOR = 0.97; 95 %CI: 0.88, 1.06, with prediction interval of 0.63, 1.48) had no statistically significant relationship with ANC. Conclusions Women empowerment did not predict the use of skilled ANC in the context of the SSA region. We recommend that further studies be conducted in order to understand how women empowerment affects skilled ANC service utilization in the region.

scholarly journals Time to early initiation of postnatal care service utilization and its predictors among women who gave births in the last 2 years in Ethiopia: a shared frailty model

2021 ◽  
Vol 79 (1) ◽  
Author(s):  
Ayal Debie ◽  
Getayeneh Antehunegn Tesema
Keyword(s):  
Antenatal Care ◽  
Service Utilization ◽  
Postnatal Care ◽  
Care Service ◽  
Frailty Model ◽  
Early Initiation ◽  
Local Health ◽  
Decentralized Decision Making ◽  
Shared Frailty Model ◽  
Shared Frailty

Abstract Background Most maternal and infant deaths occurred within the first month after birth. Nearly half of the maternal deaths and more than a million newborn deaths occurred within the first day of life but these were preventable through early initiation of postnatal care (PNC) services. However, the available evidence on the level of early initiation of PNC service utilization was not adequate to inform policy decisions. Therefore, this study aimed to assess time to early initiation of postnatal care and its predictors using the 2016 Ethiopian Demography and Health Survey (EDHS) datasets. Methods Two-stage stratified cluster sampling technique by separating each region into urban and rural areas. A total weighted sample of 6364 women of the 2016 EDHS datasets who gave birth within 2 years preceding the survey was used. Time to early initiation of the PNC visit was estimated using the Kaplan-Meier (K-M) method. Shared frailty model with baseline distributions (Weibull, Gompertz, exponential, log-logistic, and lognormal) and frailty distributions (gamma and inverse Gaussian) were used by taking enumeration areas/clusters as a random effect for predictors of time to early initiation of PNC visit. The adjusted hazard ratio (AHR) with a 95% confidence interval (CI) and p-value less than 0.05 were used to declare the significant predictor variables for time to early initiation of the PNC service utilization. Results The prevalence of women who utilized PNC services within 42 days was 13.27% (95% CI, 12.46, 14.13). Among these women, only 1.73% of them had got within the first 24 h of birth; 4.66% of them received within 48–72 h and 1.74% of them also had got within 7–14 days. Variables, such as parity (AHR = 1.61, 95% CI: 1.21, 2.15), media exposure (AHR = 1.42, 95% CI: 1.21, 1.68), place of delivery (AHR = 14.36, 95% CI: 11.76, 17.53), caesarean delivery (AHR = 2.17, 95% CI: 1.60, 2.95) and antenatal care visit (AHR = 2.07, 95% CI: 1.63, 2.63) had the higher hazard for PNC services utilization. On the other hand, women who faced with healthcare access problems (AHR = 0.74, 95% CI: 0.60, 0.87) had a lower hazard of PNC service utilization. Conclusion The overall postnatal care service utilization among women in the survey was low, particularly within the first 24 h of delivery. Policy-makers and implementers should promote the utilization of antenatal care and institutional delivery using mass media to increase the continuum of maternity care. The government should also design a new approach to enhance the uptake of postnatal care services for poor households and to scale up the PNC services, including the different possibilities for women who give births at the health facilities and homes. Future researchers had better assess the capacity and accessibility of the local health systems, the level of decentralized decision making, common cultural practices, knowledge, attitude, and perception of mothers towards PNC service utilization.

scholarly journals Postnatal care service utilization and its determinants in East Gojjam Zone, Northwest Ethiopia: A mixed-method study

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256176
Author(s):  
Liknaw Bewket Zeleke ◽  
Asmare Talie Wondie ◽  
Melaku Admas Tibebu ◽  
Addisu Alehegn Alemu ◽  
Mekuanint Taddele Tessema ◽  
...  
Keyword(s):  
Service Utilization ◽  
Postnatal Care ◽  
Qualitative Data ◽  
Service Use ◽  
Care Service ◽  
Northwest Ethiopia ◽  
World Health ◽  
Care Utilization ◽  
Health Extension Workers ◽  
Cross Sectional

Background The days and weeks after childbirth are crucial for both the mother and her newborn child leading for the majority of maternal and perinatal mortalities. The World Health Organization recommends at least three postnatal visits within 42 days after birth. However, postnatal care utilization remains low worldwide. Quantitative findings revealed low utilization of postnatal care in Ethiopia, however, no study explored the barriers for postnatal care. This study aimed to assess the barriers to postnatal care service utilization in East Gojjam Zone, Northwest Ethiopia. Methods A community-based, mixed type cross-sectional study was conducted from December 15, 2018, to February 15, 2019. The quantitative data was gathered using the interviewer-administered interviewing technique from 751 women who gave birth within one year prior to the study selected by multistage sampling. The qualitative data were collected from purposively sampled women, facility leaders, and health extension workers using in-depth interviews and focused group discussions. The quantitative and qualitative data were analyzed using logistic regression and by the thematic content analysis method, respectively. Results The study revealed that postnatal care service utilization was 34.6%. The odds of using PNC services were greater in women aged 25–34 years and used maternity waiting home. In contrast, women who were muslim religion followers, had normal or instrumental birth, not aware of the PNC services and whose partners were not supportive of the use of MCH services were less likely to use PNC services. According to the qualitative findings, lack of awareness, traditional beliefs and religious practices, distance and transportation, environmental exposure, and waiting time were identified as barriers to PNC service utilization. Conclusion and recommendation The study showed low utilization of PNC services in East Gojjam zone, northwest Ethiopia. Improvements in personal health education, in construction of relevant infrastructure, and to transport, are needed to remove or reduce barriers to PNC service use in East Gojjam Zone, Northwest Ethiopia.

scholarly journals Prevalence of Spina Bifida among Newborns in Africa: A Systematic Review and Meta-Analysis

Scientifica ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Mohammed Oumer ◽  
Molla Taye ◽  
Hailu Aragie ◽  
Ashenafi Tazebew
Keyword(s):  
Systematic Review ◽  
Spina Bifida ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Fetal Loss ◽  
Cochrane Library ◽  
Forest Plot ◽  
Birth Prevalence ◽  
Pooled Prevalence

Spina bifida is an abnormal closure of the neural tube during the fourth week of development. It is the major cause of fetal loss and considerable disabilities in newborns. The aim of this review is to determine the pooled prevalence of spina bifida among newborns in Africa. PubMed/Medline, Google Scholar, Science Direct, Joanna Briggs Institute (JBI) Library, Cochrane Library, Web of Science, African Journals Online, and Embase databases were systematically searched. Cochran Q test and I2 test statistics were applied to assess heterogeneity across studies. A random-effect model was applied to calculate the pooled prevalence of spina bifida. Forest plot and Galbraith’s plot were used to visualize heterogeneity. Subgroup, sensitivity, meta-regression, and meta-cumulative analyses were performed. All essential data were extracted using a standardized data extraction format, and the JBI quality appraisal checklist was used to assess the quality of studies. Egger’s test and Begg’s test were used in order to detect the publication bias. In the present systematic review and meta-analysis, 6,587,298 births in twenty-seven studies were included. The pooled birth prevalence of spina bifida in Africa was 0.13% with a range between 0.12% and 0.14%. In Africa, the highest burden of spina bifida was detected in Algeria (0.43%), Ethiopia (0.32%), Tanzania (0.26%), Cameron (0.12%), Egypt (0.10%), and South Africa (0.10%). The lowest burden of spina bifida was detected in Libya (0.006%) and Tunisia (0.009%). The high birth prevalence of spina bifida was detected in Africa. There was a significant variation in the prevalence of spina bifida among study countries in Africa. The authors recommend that special awareness creation with the help of health education intervention should be provided for mothers to focus on prevention in order to reduce the burden of spina bifida.

scholarly journals Magnitude and determinants for place of postnatal care utilization among mothers who delivered at home in Ethiopia: a multinomial analysis from the 2016 Ethiopian demographic health survey

2019 ◽  
Vol 16 (1) ◽  
Author(s):  
Brhane Gebrekidan Ayele ◽  
Mulugeta Abrha Woldu ◽  
Haftom Weldearegay Gebrehiwot ◽  
Equbay Gebru Gebre-egziabher ◽  
Hailay Gebretnsae ◽  
...  
Keyword(s):  
Antenatal Care ◽  
Service Utilization ◽  
Postnatal Care ◽  
Care Service ◽  
Wealth Index ◽  
Urban Region ◽  
Care Utilization ◽  
Bank Account ◽  
Home Based ◽  
At Home

Abstract Introduction Above half of mothers in Ethiopia give birth at home. Home based care within the first week after birth as a complementary strategy to facility-based postnatal care service is critical to increase the survival of both mothers and newborns. However, evidence on utilization of postnatal care and location of service among mothers who delivered at home in Ethiopia is insufficiently documented. Therefore, this study assessed the magnitude and determinants for place of postnatal care service utilization among mothers who delivered at home in Ethiopia. Methods We used the 2016 Ethiopian Demographic and Health Survey, and extracted data from 4491 mothers who delivered at home during 5 years preceding the survey. A multinomial logistic regression model was applied to examine the determinants of both facility and home -based postnatal care service utilization. Likelihood ratio test was used to see the model fitness and p-value of < 0.05 was used to determine statistical significance at 95% confidence interval. Results From the total 4491 mothers who delivered at home, only 130(2.9%) and 236(5.3%) of them utilized postnatal service at home and at a health facility respectively. Being from an urban region (AOR = 0.378, 95%CI: 0.193–0.740), ever using the calendar method to delay pregnancy (AOR = 0.528, 95%CI: 0.337–0.826), receiving four and above antenatal care visits (AOR = 0.245, 95%CI: 0.145–0.413) and having a bank account (AOR = 0.479, 95%CI: 0.243–0.943) were the factors associated with utilizing home- based postnatal care. Similarly being a follower of the orthodox religion (AOR = 1.698, 95%CI: 1.137–2.536), being in the rich wealth index (AOR = 0.608, 95%CI: 0.424–0.873), ever using the calendar method to delay pregnancy (AOR = 0.694, 95%CI: 0.499–0.966), wantedness of the pregnancy (AOR = 0.264, 95%CI: 0.352–0.953), receiving four and above antenatal care visits (AOR = 0.264, 95%CI: 0.184–0.380) and listening to radio at least once a week (AOR = 0.652, 95%CI: 0.432–0.984) were the determinants of facility-based postnatal care utilization. Conclusion The coverage of postnatal care service utilization among mothers who delivered at home was very low. Living in urban region, following the Orthodox religion, having higher wealth index, having a bank account, ever using calendar method to delay pregnancy, wantedness of the pregnancy, receiving four and above antenatal care visit and listening to radio at least weakly were associated with postnatal care service utilization. Therefore, targeted measures to improve socio-economic status, strengthen the continuum of care, and increase health literacy communication are critically important to increase postnatal care service utilization among women who deliver at home in Ethiopia.

scholarly journals Primary and secondary infertility in Africa: systematic review with meta-analysis

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Melese Shenkut Abebe ◽  
Mekbeb Afework ◽  
Yeshiwas Abaynew
Keyword(s):  
Inflammatory Diseases ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Degree Of Freedom ◽  
Cochrane Library ◽  
Forest Plot ◽  
Secondary Infertility ◽  
Chi Square ◽  
Pooled Prevalence

Abstract BACKGROUND Infertility is a practical concern of Africans due to social disgrace and exclusion. This meta-analysis aims to analyze the proportion of primary and secondary infertility and identify the etiologic factors based on the studies conducted in Africa. METHODS An internet-based search was conducted on the following databases; PubMed/Medline, EMBASE, Cochrane library, and google scholar. Both population and institution-based studies conducted among African couples, males, and females were included. Data extraction and critical appraisal of the articles were done by two independent investigators. Meta-analysis using a random effect model was conducted by Stata version 14. Forest plot, heterogeneity test, and funnel plot for publication bias were performed. RESULTS The pooled proportion of primary and secondary infertility in Africa was 49.91% (I2 = 98.7, chi-square = 1509.01, degree of freedom = 19 and p < 0.001) and 49.79% (I2 = 98.7, chi-square = 1472.69, degree of freedom = 19 and p < 0.001) respectively. The pooled prevalence of the causes of infertility indicated that 54.01% and 22.26% of the infertility cases were respectively due to female and male-related problems. In 21.36% of infertility cases, both sexes were affected, while 10.4% of the causes of infertility were unexplained. The pooled prevalence of mostly reported causes of male infertility was 31% (oligospermia), 19.39% (asthenozoospermia), and 19.2% (varicocele). The most commonly identified causes of female infertility were pelvic inflammatory disease, tubal factors, and abortion with a pooled prevalence of 39.38%, 39.17%, and 36.41% respectively. Conclusions In Africa, the proportion of primary and secondary infertility is approximately equal. Infertility is mostly due to female-related causes like; pelvic inflammatory diseases, uterine tube related problems, and abortion. Oligospermia, asthenozoospermia, and varicocele were the commonest causes of male-related infertility. It is suggested that interpretation and utilization of these findings should consider the presence of substantial heterogeneity between the included studies.

Antenatal care service utilization in tribal and rural areas in a South Indian district

2011 ◽  
Vol 86 (1&2) ◽  
pp. 11-15 ◽  
Author(s):  
Godi Rajendra Varma ◽  
Yadlapalli Sriparvathi Kusuma ◽  
Bontha Veerraju Babu
Keyword(s):  
Antenatal Care ◽  
Service Utilization ◽  
Rural Areas ◽  
Care Service ◽  
South Indian

scholarly journals The effects of ANC follow up on essential newborn care practices in east Africa: a systematic review and meta-analysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Erkihun Tadesse Amsalu ◽  
Bereket Kefale ◽  
Amare Muche ◽  
Zinabu Fentaw ◽  
Reta Dewau ◽  
...  
Keyword(s):  
Antenatal Care ◽  
Pregnant Women ◽  
East Africa ◽  
Meta Analysis ◽  
Newborn Care ◽  
Cochrane Library ◽  
Care Practice ◽  
Essential Newborn Care ◽  
Newborn Care Practice

AbstractIn the situation of high maternal morbidity and mortality in Sub-Saharan Africa, less than 80% of pregnant women receive antenatal care services. To date, the overall effect of antenatal care (ANC) follow up on essential newborn practice have not been estimated in East Africa. Therefore, this study aims to identify the effect of ANC follow up on essential newborn care practice in East Africa. We reported this review according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA). We searched articles using PubMed, Cochrane library, African journal online (AJOL), and HINARI electronic databases as well as Google/Google scholar search engines. Heterogeneity and publication bias between studies were assessed using I2 test statistics and Egger’s significance test. Forest plots were used to present the findings. In this review, 27 studies containing 34,440 study participants were included. The pooled estimate of essential newborn care practice was 38% (95% CI 30.10–45.89) in the study area. Women who had one or more antenatal care follow up were about 3.71 times more likely practiced essential newborn care compared to women who had no ANC follow up [OR 3.71, 95% CI 2.35, 5.88]. Similarly, women who had four or more ANC follow up were 2.11 times more likely practiced essential newborn care compared to women who had less than four ANC follow up (OR 2.11, 95% CI 1.33, 3.35). Our study showed that the practice of ENBC was low in East Africa. Accordingly, those women who had more antenatal follow up were more likely practiced Essential newborn care. Thus, to improve the practice of essential newborn care more emphasis should be given on increasing antenatal care follow up of pregnant women in East Africa.

Novel oral anticoagulats for the treatment of left ventricle thrombosis: a systematic review and meta-analysis

EP Europace ◽  
2021 ◽  
Vol 23 (Supplement_3) ◽  
Author(s):  
M Serenelli ◽  
F Vitali ◽  
R Pavasini ◽  
E Tonet ◽  
G Pompei ◽  
...  
Keyword(s):  
Primary Outcome ◽  
Randomized Clinical Trials ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Left Ventricular ◽  
Left Ventricular Thrombus ◽  
Cochrane Library ◽  
Secondary Outcome ◽  
Ventricular Thrombus

Abstract Funding Acknowledgements Type of funding sources: None. Background novel oral anticoagulants (NOACs) are not guideline-recommanded treatment for left ventricular thrombus.  Purpose: the aim of this meta-analysis is to compare NOACs versus vitamin-K atagonsits (VKAs) efficacy in treating left ventricular thrombus (LVT). Methods: we systematically searched MEDLINE, Cochrane Library, Biomed Central, and Web of Science for trials comparing NOACs versus VKAs in the setting of LVT. Five studies, out of the 74 initially selected after first screening, were included in the meta-analysis. For the development of this meta-analysis, the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines were followed. The shortlisted studies were retrieved as full articles and appraised independently by two unblinded reviewers. The Mantel-Haensel method with a random effect model was used for the pooled analysis. The primary outcome was the occurrence of stroke and systemic embolism. Secondary outcome was occurrence of left ventricular thrombosis resolution during treatment.  Results: 707 patients were included in the analysis for the primary outcome. Of these, 230 were treated with NOACs and 477 with VKAs. The pooled OR for the primary outcome was 0.71 (95% CI 0.18-2.86, I2 67%), thus showing similar effect in term of ischaemic protection. A total of 698 patients, 228 on NOACs and 470 on VKAs were included in the analysis of the secondary outcome. The pooled OR for the secondary outcome pooled OR 0.97, 95% CI 0.56-1.68, I2 46%. Conclusions and Relevance: NOACs seem to have a similar efficacy profile compare to VKAs and so they should be considered as an alternative treatment for left ventricular thrombosis. Large prospective randomized clinical trials are needed to confirm this exploratory finding. Abstract Figure 1

Sign in / Sign up

Export Citation Format

Share Document