[External validity and its evaluation used in clinical trials].
作者信息
Wu Yu-Xia, Kang De-Ying, Hong Qi, Wang Jia-Liang
机构信息
Department of Evidence-Based Medicine and Clinical Epidemiology, West China Hospital, Sichuan University, Chengdu 610041, China.
出版信息
Zhonghua Liu Xing Bing Xue Za Zhi. 2011 May;32(5):514-8.
PMID:21569739
Abstract
摘要
Zotero 插件