Preventive Effects of Qingfei Yihuo Capsules (清肺抑火胶囊) on Air Pollution Associated Exacerbation of Chronic Obstructive Pulmonary Disease: A Single-blind, Randomized, Controlled Trial
2020 ◽
Vol 26
(11)
◽
pp. 806-811
2020 ◽
Vol 120
(5)
◽
pp. 778-791.e1
2019 ◽
Vol Volume 14
◽
pp. 1239-1250
2016 ◽
Vol 13
(5)
◽
pp. 617-626
◽
2018 ◽
Vol 13
(1)
◽