| Literature DB >> 1928543 |
R F Schilling, N el-Bassel, M A Leeper, L Freeman.
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Year: 1991 PMID: 1928543 PMCID: PMC1405312 DOI: 10.2105/ajph.81.10.1345-a
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308