1. The Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, USA
2. Baylor College of Medicine, Houston, TX, USA
3. Veterans Affairs South Central Mental Illness Research, Education and Clinical Center, Houston, TX, USA
4. Weill Cornell Medical College, White Plains, New York, NY, USA
5. Houston Center for Quality of Care & Utilization Studies, Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, USA
6. University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
7. Case Western Reserve University School of Medicine, University Hospitals Case Medical Center, Cleveland OH, USA
8. Center for Addiction and Mental Health and Department of Psychiatry, University of Toronto, Toronto ON, Canada