New York City infant day care study.
D002656:Child Day Care Centers; D002657:Child Development; D002662:Child Health Services; D002668:Child Rearing; D002675:Child, Preschool; D005190:Family; D006077:Government Agencies; D006801:Humans; D007223:Infant; D007224:Infant Care / Q000379:methods*; D007398:Interpersonal Relations; D009519:New York City; D011581:Psychological Tests; D011635:Public Health Administration