[1] Amer Geriatr Soc, New York, NY 10021 USA
[2] Univ Calif Los Angeles, Sch Med, Los Angeles, CA USA
[3] Sepulveda VA Geriatr Res Educ & Clin Ctr, Los Angeles, CA USA
[4] Univ Alabama Birmingham, Sch Med, Birmingham, AL USA
[5] Yale Univ, Sch Med, New Haven, CT 06520 USA
[6] Wake Forest Univ, Sch Med, Ctr Aging, Winston Salem, NC 27109 USA
[7] Univ Utah, Pain Management Ctr, Salt Lake City, UT USA
[8] Vista Care, Salt Lake City, UT USA
[9] Univ Iowa, Coll Nursing, Iowa City, IA 52242 USA
[10] North W Hosp, Natl Ageing Res Inst, Parkville, Vic, Australia
[11] North W Hosp, Pain Management Ctr, Parkville, Vic, Australia
[12] Univ Rochester, Sch Med, Rochester, NY USA
[13] George Washington Univ, Ctr Improve Care Dying, Washington, DC USA
[14] Northwestern Univ, Sch Med, Chicago, IL USA