I Oswald. Show Affiliations »
Abstract
Mesh: See more » Clinical Trials as TopicHumansResearch Design
Year: 1989 PMID: 2511985 PMCID: PMC1837967 DOI: 10.1136/bmj.299.6707.1103-c
Source DB: PubMed Journal: BMJ ISSN: 0959-8138