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
- 1 December 1993
- journal article
- Published by American Medical Association (AMA) in JAMA
- Vol. 270 (21) , 2598-2601
- https://doi.org/10.1001/jama.270.21.2598