M Clarke, A Oxman. Show Affiliations »
Abstract
Mesh: See more » MEDLINEReview Literature as Topic
Year: 1999 PMID: 10574879 PMCID: PMC1117160 DOI: 10.1136/bmj.319.7222.1435
Source DB: PubMed Journal: BMJ ISSN: 0959-8138