Randomised trials in peri-natal medicine: suggestions to overcome practical limitations and ethical constraints.
作者信息
Lilford R J
机构信息
Department of Obstetrics & Gynecology, St. James' University Hospital, University of Leeds, U.K.
出版信息
J Perinat Med. 1989;17(1):13-8.
PMID:2746439
Abstract
摘要
Zotero 插件