| Literature DB >> 4367031 |
J C Hierholzer, A Pumarola, A Rodriguez-Torres, M Beltran.
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Year: 1974 PMID: 4367031 DOI: 10.1093/oxfordjournals.aje.a121632
Source DB: PubMed Journal: Am J Epidemiol ISSN: 0002-9262 Impact factor: 4.897