title: Influence of combinations of sexes of children on family size.
mesh_terms: D001723:Birth Rate; D005006:Ethnicity; D005163:Factor Analysis, Statistical; D005191:Family Characteristics; D005193:Family Planning Services; D005260:Female; D006801:Humans; D008297:Male; D012744:Sex Ratio; D013334:Students; D014481:United States