作者单位：Univ Maryland, Sch Med, Baltimore VA Med Ctr, Geriatr Res Educ Ctr, Baltimore, MD 21201 USA[1]Johns Hopkins Univ, Sch Med, Dept Med, Div Geriatr Med & Gerontol, Baltimore, MD 21205 USA[2]Univ Maryland, Sch Med, Dept Epidemiol & Publ Hlth, Div Gerontol, Baltimore, MD 21201 USA[3]Columbia Univ, Mailman Sch Publ Hlth, New York, NY USA[4]Florida Int Univ, Herbert Wertheim Coll Med, Dept Med, Benjamin Leon Family Ctr Geriatr Res & Educ[5]
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