1. Northern California Veterans Administration Health Care System, Mather, California, USA.
2. Department of Psychiatry & Behavioral Sciences, UC Davis, Sacramento, California, USA.
3. Division of Digital Psychiatry, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.
4. Stanford University School of Medicine, Palo Alto, California, USA.
5. Veterans Affairs Palo Alto Health Care System, UC Davis School of Medicine, Sacramento, California, USA.
6. Department of Internal Medicine, UC Davis School of Medicine, Sacramento, California, USA.
7. Department of Psychiatry, UC Davis School of Medicine, Sacramento, California, USA.