1. Behavioral Medicine and Addictions Research Butler Hospital Providence RI USA
2. Boston University School of Public Health Boston MA, USA
3. Center for Integrated Health Care Research Kaiser Permanente Hawaii Honolulu HI USA
4. Warren Alpert Medical School of Brown University Providence RI USA
5. Section of General Internal Medicine Boston University School of Medicine Boston MA USA
6. Division of General Internal Medicine, Center for Research on Health Care University of Pittsburgh Pittsburgh PA USA