[1] Univ Calif San Diego, Dept Psychiat, La Jolla, CA 92093 USA
[2] Samueli Inst, Alexandria, VA USA
[3] Univ Calif San Diego, Family & Prevent Med, La Jolla, CA 92093 USA
[4] Univ Calif San Diego, Dept Med, La Jolla, CA 92093 USA
[5] San Diego VA Hlth Care Syst, La Jolla, CA USA
[6] Penn State Coll Med, Doctors Kienle Ctr Humanist Med, Hershey, PA USA