R Cruz-Coke. Show Affiliations »
Abstract
Mesh: See more » ChileChromosome Aberrations/epidemiologyChromosome DisordersDown Syndrome/epidemiologyFamily Planning ServicesFemaleGenetics, PopulationHumansMaternal AgePregnancySex Ratio
Year: 1973 PMID: 4265974 PMCID: PMC1762503
Source DB: PubMed Journal: Am J Hum Genet ISSN: 0002-9297 Impact factor: 11.025