Effects of family size and density on newborn characteristics.
D002675:Child, Preschool; D005190:Family; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D002666:Psychology, Child; D013391:Sucking Behavior