| Literature DB >> 10358669 |
D Ryan, B Levy, B S Levy, S Pollack, B Walker.
Abstract
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Year: 1999 PMID: 10358669 PMCID: PMC1508654 DOI: 10.2105/ajph.89.6.822
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308