[1] Vet Affairs Ctr Study Healthcare Innovat Implement, Los Angeles, CA USA
[2] Univ Calif Los Angeles, Dept Med Gen Internal Med & Hlth Serv Res, Los Angeles, CA USA
[3] Dana Farber Canc Inst, Dept Psychosocial Oncol & Palliat Care, Boston, MA USA
[4] Brigham & Womens Hosp, Dept Med, Boston, MA USA
[5] RAND Corp, Santa Monica, CA USA
[6] RAND Corp, 1776 Main St, Santa Monica, CA 90407 USA