R Smith. Show Affiliations »
Abstract
Mesh: See more » National Institutes of Health (U.S.)/organization & administrationPeer ReviewResearch Support as TopicUnited States
Year: 1988 PMID: 3128373 PMCID: PMC2545305 DOI: 10.1136/bmj.296.6623.691
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623