[1] Vet Affairs Boston Hlth Care Syst, Sect Gen Internal Med, Boston, MA USA
[2] Dana Farber Canc Inst, Dept Psychosocial Oncol & Palliat Care, Boston, MA USA
[3] Harvard Med Sch, Boston, MA USA
[4] Boston Med Ctr, Sect Nephrol, Boston, MA USA
[5] Boston Univ, Chobanian & Avedisian Sch Med, Boston, MA USA
[6] Univ Calif San Francisco, Div Geriatr, San Francisco, CA USA
[7] Univ Calif San Francisco, Div Palliat Care, San Francisco, CA USA
[8] Bay Hlth, San Francisco, CA USA
[9] Univ Massachusetts, Chan Med Sch, Dept Populat & Quantitat Hlth Sci, Worcester, MA USA
[10] Edith Nourse Rogers Mem VA Healthcare Syst, Ctr Healthcare Org & Implementat Res, Bedford, MA USA
[11] VA Boston Healthcare Syst, 150 South Huntington Ave,Bldg 9, Boston, MA 02130 USA