[1] Univ Massachusetts, John W McCormack Grad Sch Policy & Global Studies, Dept Gerontol, 100 Morrissey Blvd, Boston, MA 02125 USA
[2] Univ Massachusetts, John W McCormack Grad Sch Policy & Global Studies, Gerontol Inst, 100 Morrissey Blvd, Boston, MA 02125 USA
[3] Brown Univ, Sch Publ Hlth, Dept Hlth Serv Policy & Practice, Providence, RI 02912 USA
[4] Brown Univ, Sch Publ Hlth, Ctr Gerontol & Healthcare Res, Providence, RI 02912 USA
[5] Rutgers State Univ, Sch Publ Hlth, Dept Hlth Syst & Policy, New Brunswick, NJ USA
[6] Hastings Ctr, Garrison, NY USA
[7] Univ Illinois, Inst Hlth Res & Policy, Ctr Hlth Behav Res, Chicago, IL USA