1. VA Boston Healthcare System, Boston, Massachusetts, USA
2. National Center for PTSD – Behavioral Science Division, Boston, Massachusetts, USA
3. New England Geriatric Research Education and Clinical Center (GRECC), Boston, Massachusetts, USA
4. Department of Psychiatry, Boston University Chobanian & Avedisian School of Medicine, Boston, Massachusetts, USA
5. Sierra Pacific Mental Illness Research Education and Clinical Center (MIRECC), VA Palo Alto Health Care System, Palo Alto, California, USA
6. Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, California, USA
7. School of Psychology, The University of Queensland, Brisbane, Australia