1. Division of Otolaryngology, Department of Surgery, University of California, San Diego, La Jolla
2. Harvard School of Public Health, Boston, Massachusetts
3. Research Service, Veterans Affairs San Diego Healthcare System, San Diego, California
4. Department of Psychiatry, University of California, San Diego, La Jolla
5. Psychiatry Service, Veterans Affairs San Diego Healthcare System, San Diego, California
6. Center of Excellence for Stress and Mental Health, Veterans Affairs San Diego Healthcare System, San Diego, California