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Abstract
Mesh: See more » Clinical Trials as TopicEpidemiologic MethodsHospitalizationHumansProbabilityResearch Design
Year: 1980 PMID: 6986951 PMCID: PMC1600120 DOI: 10.1136/bmj.280.6210.330-a
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447