| Literature DB >> 4397564 |
B E Henderson, W A Chappell, J G Johnston, W D Sudia.
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Year: 1971 PMID: 4397564 DOI: 10.1093/oxfordjournals.aje.a121246
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897