The prevalence of hepatitis B and human immunodeficiency virus infection among pregnant women attending antenatal clinics in Calabar, Nigeria
1998 ◽
Vol 80
(1)
◽
pp. 35-38
◽
2009 ◽
Vol 104
(5)
◽
pp. 755-763
◽
2008 ◽
pp. 321-346
◽
2013 ◽
Vol 158
(9)
◽
pp. 1889-1894
◽
1996 ◽
Vol 22
(4)
◽
pp. 299-304
◽
2001 ◽
Vol 184
(6)
◽
pp. 1235-1240
◽
1992 ◽
Vol 327
(24)
◽
pp. 1704-1709
◽