[1] Univ Texas MD Anderson Canc Ctr, Dept Surg Oncol, Houston, TX 77030 USA
[2] Univ Calif San Francisco, Dept Psychiat, Weill Inst Neurosci, San Francisco, CA USA
[3] Oregon Hlth & Sci Univ, Ctr Policy & Res Emergency Med, Dept Emergency Med, Portland, OR 97201 USA
[4] Edward Hines Jr VA Hosp, Hines, IL USA
[5] Phys Moms Grp, Los Angeles, CA USA
[6] Univ Calif San Francisco, Dept Dermatol, Program Clin Res, San Francisco, CA 94143 USA