| Literature DB >> 866558 |
R D Krugman, J J Witte, P D Parkman, K L Herrmann, H M Meyer, R D Wende, B C Meyer, R Dungca.
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Year: 1977 PMID: 866558 PMCID: PMC1432007
Source DB: PubMed Journal: Public Health Rep ISSN: 0033-3549 Impact factor: 2.792