C L Erhardt, F G Nelson, J Pakter. Show Affiliations »
Abstract
Mesh: See more » African AmericansBirth CertificatesBirth RateDeath CertificatesEthnic GroupsFemaleFertilizationFetal Death/epidemiologyHumansIllegitimacyIncomeInfant, NewbornMaleMarriageMaternal AgeMenstruationNew York CityParityPregnancyPregnancy, MultiplePuerto RicoSeasonsSex RatioTime FactorsUnited States
Year: 1971 PMID: 5112972 PMCID: PMC1530168 DOI: 10.2105/ajph.61.11.2246
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308