| Literature DB >> 5263145 |
S Graham, R Gibson, A Lilienfeld, L Schuman, M Levin.
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Year: 1970 PMID: 5263145 PMCID: PMC1350015 DOI: 10.2105/ajph.60.2.266
Source DB: PubMed Journal: Am J Public Health Nations Health ISSN: 0002-9572