1. Mental Health Service, Ann Arbor Veterans Healthcare System, Ann Arbor, Michigan.
2. Department of Psychiatry, University of Michigan Medical School, Ann Arbor, Michigan.
3. Mental Health Service, Boston VA Healthcare System, Boston, Massachussetts.
4. Department of Psychology, Eastern Michigan University, Ypsilanti, Michigan.
5. Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia.
6. Mental Health Service, Atlanta VA Medical Center, Atlanta, Georgia.