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Abstract
Keywords: RESEARCH/medical
Mesh: See more » Biomedical ResearchFamily PracticeGeneral PracticeHumansResearch
Year: 1948 PMID: 18881276 PMCID: PMC2091917 DOI: 10.1136/bmj.2.4574.469
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447