Foster granparents program: preventive intervetion with the elderly poor.
D000367:Age Factors; D000368:Aged; D001900:Boston; D002669:Child Welfare; D002674:Child, Institutionalized; D004651:Employment; D005380:Financing, Government; D005581:Foster Home Care; D006801:Humans; D008607:Intellectual Disability; D001523:Mental Disorders / Q000517:prevention & control*; D011203:Poverty; D011632:Public Assistance; D012959:Socioeconomic Factors