| Literature DB >> 4387912 |
B E Henderson, C H Calisher, P H Coleman, B N Fields, T H Work.
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Year: 1969 PMID: 4387912 DOI: 10.1093/oxfordjournals.aje.a120933
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897