[1] Univ Rochester, Dept Publ Hlth Sci, Rochester, NY 14642 USA
[2] Canandaigua Vet Adm Med Ctr, Canandaigua, NY USA
[3] Brown Univ, Sch Publ Hlth, Ctr Gerontol & Hlth Care Res, Providence, RI 02912 USA
[4] Brown Univ, Sch Publ Hlth, Dept Hlth Serv Policy & Practice, Providence, RI 02912 USA
[5] Brown Univ, Ctr Gerontol & Healthcare Res, Providence, RI 02912 USA