| Literature DB >> 5563279 |
D J Lang, S A Schroeder, L J Kunz, L A Thomson, B C Hobbs, N J Butler.
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Year: 1971 PMID: 5563279 PMCID: PMC1530191 DOI: 10.2105/ajph.61.8.1615
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308