作者单位:Weill Cornell Med Coll, New York, NY USA[1]Jewish Assoc Serving Aging, New York, NY USA[2]Univ Toronto, Factor Inwentash Fac Social Work, Toronto, ON M5S 1V4, Canada[3]SUNY Binghamton, Dept Social Work, Coll Community & Publ Affairs, Binghamton, NY 13902 USA[4]Columbia Univ, Dept Biostat, New York, NY USA[5]