Users' guides to the medical literature. II. How to use an article about therapy or prevention. A. Are the results of the study valid? Evidence-Based Medicine Working Group.
作者信息
Guyatt G H, Sackett D L, Cook D J
机构信息
Department of Medicine, McMaster University, Hamilton, Ontario, Canada.
出版信息
JAMA. 1993 Dec 1;270(21):2598-601. doi: 10.1001/jama.270.21.2598.