[1] Univ Washington, Sch Med, Dept Anesthesiol & Pain Med, Seattle, WA USA
[2] Univ Calif San Francisco, Sch Med, Dept Psychiat, San Francisco, CA USA
[3] Univ Calif San Francisco, Sch Nursing, San Francisco, CA 94143 USA
[4] NYU, Rory Meyers Coll Nursing, New York, NY USA
[5] Dana Farber Canc Inst, Phyllis F Cantor Ctr, Boston, MA 02115 USA
[6] Univ Pittsburgh, Sch Nursing, Pittsburgh, PA 15261 USA
[7] Univ Calif San Francisco, Sch Dent, San Francisco, CA USA
[8] Stanford Univ, Dept Psychiat & Behav Sci, Sch Med, Stanford, CA 94305 USA