Recruitment to multicentre trials.
作者信息
Gates Simon, Brocklehurst Peter, Campbell Marion, Elbourne Diana
机构信息
National Perinatal Epidemiology Unit, Institute of Health Sciences, Oxford, UK.
出版信息
BJOG. 2004 Jan;111(1):3-5. doi: 10.1111/j.1471-0528.2004.00011.x.
Abstract
摘要
Zotero 插件