| Literature DB >> 4305200 |
J Chin, R L Magoffin, L A Shearer, J H Schieble, E H Lennette.
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Year: 1969 PMID: 4305200 DOI: 10.1093/oxfordjournals.aje.a120957
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897