| Literature DB >> 10063691 |
O Levine1, J Wenger, Y B Perkins, N Rosenstein, A Schuchat.
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Year: 1998 PMID: 10063691 PMCID: PMC2305683
Source DB: PubMed Journal: Bull World Health Organ ISSN: 0042-9686 Impact factor: 9.408