[1] Div Hosp Med, San Francisco, CA USA
[2] Baystate Med Ctr, Springfield, MA USA
[3] City Hope Natl Med Ctr, Duarte, CA USA
[4] Univ Calif San Francisco, Palliat Care Program, San Francisco, CA 94143 USA
[5] Univ Calif San Francisco, San Francisco, CA 94143 USA
[6] VA Greater Los Angeles, Los Angeles, CA USA