Health care of preschool children in families on welfare.
D001741:Black or African American; D002662:Child Health Services; D002669:Child Welfare; D002675:Child, Preschool; D005006:Ethnicity; D005260:Female; D006801:Humans; D007223:Infant; D009519:New York City; D010044:Outpatient Clinics, Hospital; D011632:Public Assistance; D011647:Puerto Rico