The father's role in the family system.
D002657:Child Development; D036861:Delivery, Obstetric; D005190:Family; D005219:Father-Child Relations; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010988:Play and Playthings; D012380:Role; D012737:Sex Factors; D012931:Social Environment