1. Department of Psychiatry and Behavioral Sciences, University of California, Sacramento, California, USA.
2. Department of Public Health Sciences, University of California, Davis, California, USA.
3. Stanford University School of Medicine, Stanford, California, USA.
4. Veterans Administration Palo Alto Healthcare System, Palo Alto, California, USA.
5. Heritage Oaks Hospital, Sacramento, California, USA.
6. Department of Psychiatry, University of California, Irvine, California, USA.
7. Department of Psychiatry, University of Colorado Anschutz Medical Campus, Denver, Colorado, USA.