title: Gestation length and sex of child.
authors.forename: M E
authors.initials: ME
authors.lastname: Bernstein
mesh_terms: D000818:Animals; D005260:Female; D005858:Germany; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012744:Sex Ratio; D014481:United States