R J Armstrong. Show Affiliations »
Abstract
Entities: Species
Mesh: See more » Age FactorsBirth WeightContinental Population GroupsFemaleGestational AgeHumansInfant MortalityInfant, NewbornMaleMaternal AgePregnancySex FactorsUnited States
Year: 1972 PMID: 4537715
Source DB: PubMed Journal: Vital Health Stat 20 ISSN: 0083-2022