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Abstract
Keywords: EPIDEMIOLOGY; HOSPITALS; RESEARCH
Mesh: See more » Epidemiologic StudiesEpidemiologyHospitalsHumansResearch
Year: 1965 PMID: 14287835 PMCID: PMC1256294 DOI: 10.2105/ajph.55.5.658
Source DB: PubMed Journal: Am J Public Health Nations Health ISSN: 0002-9572