[1] Univ Utah, Salt Lake City, UT 84112 USA
[2] Curatio CME Inst, Exton, PA USA
[3] Beth Israel Deaconess Med Ctr, Dept Pain Med & Palliat Care, New York, NY 10003 USA
[4] Albert Einstein Coll Med, New York, NY USA
[5] Metropolitan Jewish Hosp, New York, NY USA
[6] Palliat Care Jacob Perlow Hosp, New York, NY USA