title: Parental models of infancy: a note on gender preferences for firstborns.
mesh_terms: D000328:Adult; D001722:Birth Order; D002755:Choice Behavior; D005260:Female; D005818:Genetic Engineering; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012743:Sex Preselection