作者单位:Univ So Calif, Sch Social Work, Los Angeles, CA 90089 USA[1]Rush Univ, Med Ctr, Rush Inst Hlth Aging, Chicago, IL 60612 USA[2]Duke Univ, Sch Nursing, Durham, NC USA[3]Columbia Univ, Sch Social Work, New York, NY USA[4]Univ Cent Florida, Coll Hlth & Publ Affairs, Orlando, FL 32816 USA[5]