title: Sex ratio imbalance and Down's syndrome newborns.
authors.forename: S
authors.initials: S
authors.lastname: Bianca
authors.forename: M
authors.initials: M
authors.lastname: Bianca
authors.forename: G
authors.initials: G
authors.lastname: Ettore
mesh_terms: D004314:Down Syndrome / Q000453:epidemiology* / Q000235:genetics; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D012744:Sex Ratio