1. Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut, USA
2. New England Mental Illness Research Education Clinical Center, VA Connecticut Healthcare System, West Haven, Connecticut, USA
3. Hampton VA Medical center, Hampton, Virginia, USA
4. Departments of Physical Medicine & Rehabilitation and Psychiatry, Eastern Virginia Medical School, Norfolk, Virginia, USA
5. Department of Biostatistics, Yale School of Public Health, New Haven, Connecticut, USA
6. Department of Public Health Sciences, School of Medicine, University of Connecticut, Farmington, Connecticut, USA