1. Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, USA
2. Department of Veterans Affairs, Sierra-Pacific Mental Health Research, Education, and Clinical Center (MIRECC), Palo Alto, CA, USA
3. Department of Veterans Affairs, War Related Illness and Injury Study Center (WRIISC), Palo Alto, CA, USA
4. Pharmacy Service, VA Palo Alto Health Care System (VAPAHCS), Palo Alto, CA, USA
5. Departments of Health Research and Policy and of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA