[1] Vet Affairs Boston Healthcare Syst, Sect Gen Internal Med, 150 South Huntington Ave,Bldg 9, Boston, MA 02130 USA
[2] Brigham & Womens Hosp, Div Gen Internal Med, 75 Francis St, Boston, MA 02115 USA
[3] Dana Farber Canc Inst, Dept Psychosocial Oncol & Palliat Care, Boston, MA 02115 USA
[4] Harvard Med Sch, Boston, MA 02115 USA
[5] Harvard Med Sch, Dept Hlth Care Policy, Boston, MA 02115 USA
[6] Brigham & Womens Hosp, Div Renal Med, 75 Francis St, Boston, MA 02115 USA
[7] Boston Univ, Sch Publ Hlth, Dept Hlth Law Policy & Management, Boston, MA USA
[8] Edith Nourse Rogers Mem VA Healthcare Syst, Ctr Healthcare Org & Implementat Res, Bedford, MA USA