title: Parental, birth, and infancy factors in infant twin development.
mesh_terms: D000367:Age Factors; D001722:Birth Order; D001724:Birth Weight; D002657:Child Development; D004200:Diseases in Twins; D004644:Emotions; D005106:Exploratory Behavior; D005247:Feeding Behavior; D005260:Female; D006128:Growth; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases; D009043:Motor Activity; D009460:Neurologic Examination; D010287:Parent-Child Relations; D010553:Personality Development; D011247:Pregnancy; D012801:Sibling Relations; D012919:Social Behavior; D014427:Twins