1. Eastern Colorado Health Care System, Department of Veterans Affairs, Denver, Colorado.
2. Department of Medicine, University of Colorado School of Medicine at the Anschutz Medical Campus, Aurora, Colorado.
3. Department of Psychology, Univerisity of Colorado Denver, Denver, Colorado.
4. Department of Health and Behavioral Sciences, Univerisity of Colorado Denver, Denver, Colorado.
5. College of Nursing, University of Colorado School of Medicine at the Anschutz Medical Campus, Aurora, Colorado.
6. VA Greater Los Angeles Healthcare System, Los Angeles, California.
7. VA Palo Alto Health Care System, Palo Alto, California.