Study designs in epidemiology and levels of evidence.
作者信息
Wang Jie Jin, Attia John
机构信息
Centre for Vision Research, Westmead Millennium Institute, University of Sydney, Sydney, Australia.
出版信息
Am J Ophthalmol. 2010 Mar;149(3):367-70. doi: 10.1016/j.ajo.2009.08.001.
PMID:20172064
Abstract
摘要
Zotero 插件