| Literature DB >> 4081609 |
C G Victora, F C Barros, J C Martines, J U Béria, J P Vaughan.
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Year: 1985 PMID: 4081609 DOI: 10.1590/s0034-89101985000100007
Source DB: PubMed Journal: Rev Saude Publica ISSN: 0034-8910 Impact factor: 2.106