The mother, the developmentally disabled child and the nurse.
D002654:Child Care; D002675:Child, Preschool; D002658:Developmental Disabilities; D005260:Female; D006117:Grief; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009035:Mothers / Q000523:psychology*; D009732:Nursing Care; D012918:Social Alienation; D012944:Social Support