A study of sleep behavior in two-year-old children.
D001290:Attitude; D002652:Child Behavior; D002657:Child Development; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008425:Maternal Behavior; D012890:Sleep; D012893:Sleep Wake Disorders; D011795:Surveys and Questionnaires