L H DAY. Show Affiliations »
Abstract
Entities: Species
Keywords: PREGNANCY/statistics
Mesh: See more » FemaleHumansPregnancy/statistics & numerical data
Year: 1958 PMID: 13567997 PMCID: PMC1951671
Source DB: PubMed Journal: Public Health Rep ISSN: 0094-6214 Impact factor: 2.792