[1] Univ Calif San Francisco, Hlth Psychol Program, San Francisco Dept Psychiat, San Francisco, CA 94143 USA
[2] Univ Calif San Francisco, San Francisco Ctr AIDS Prevent Studies, San Francisco, CA 94143 USA
[3] Columbia Univ, New York State Psychiat Inst, New York, NY USA
[4] NIH, Ctr Complementary & Alternat Med, Bethesda, MD 20892 USA