1. VA Mid-Atlantic Mental Illness Research, Education and Clinical Center, Durham, NC, USA
2. Durham VA Medical Center, NC, USA
3. Duke University School of Medicine, Durham, NC, USA
4. VA Center of Excellence for Health Services Research in Primary Care, Durham, NC, USA
5. University of Connecticut Health Center, Farmington, CT, USA
6. VA Connecticut Healthcare System, West Haven, CT, USA
7. Phoenix VA Healthcare System, AZ, USA