Users' guides to the medical literature. XIII. How to use an article on economic analysis of clinical practice. A. Are the results of the study valid? Evidence-Based Medicine Working Group
- 21 May 1997
- journal article
- Published by American Medical Association (AMA)
- Vol. 277 (19), 1552-1557
- https://doi.org/10.1001/jama.277.19.1552