1. Medical Practice Evaluation Center, Massachusetts General Hospital, Boston2Division of Pulmonary and Critical Care Medicine, Massachusetts General Hospital, Boston3Harvard Medical School, Boston, Massachusetts
2. Harvard Medical School, Boston, Massachusetts4Institute for Technology Assessment, Massachusetts General Hospital, Boston
3. Medical Practice Evaluation Center, Massachusetts General Hospital, Boston3Harvard Medical School, Boston, Massachusetts5Division of Infectious Diseases, Massachusetts General Hospital, Boston
4. Harvard Medical School, Boston, Massachusetts6Division of General Internal Medicine, Massachusetts General Hospital, Boston7Tobacco Research and Treatment Center, Massachusetts General Hospital, Boston
5. Medical Practice Evaluation Center, Massachusetts General Hospital, Boston3Harvard Medical School, Boston, Massachusetts8Biostatistics Center, Massachusetts General Hospital, Boston
6. Medical Practice Evaluation Center, Massachusetts General Hospital, Boston3Harvard Medical School, Boston, Massachusetts6Division of General Internal Medicine, Massachusetts General Hospital, Boston8Biostatistics Center, Massachusetts General Hospital, Boston
7. Yale School of Public Health, New Haven, Connecticut
8. Harvard Medical School, Boston, Massachusetts10Department of Orthopedic Surgery, Brigham and Women’s Hospital, Boston, Massachusetts11Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts
9. Harvard Medical School, Boston, Massachusetts12Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
10. Medical Practice Evaluation Center, Massachusetts General Hospital, Boston3Harvard Medical School, Boston, Massachusetts5Division of Infectious Diseases, Massachusetts General Hospital, Boston6Division of General Internal Medicine, Massachusetts General Hospital, Boston12Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, Massachusetts13Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts
11. Medical Practice Evaluation Center, Massachusetts General Hospital, Boston3Harvard Medical School, Boston, Massachusetts5Division of Infectious Diseases, Massachusetts General Hospital, Boston6Division of General Internal Medicine, Massachusetts General Hospital, Boston14Division of Infectious Diseases, Brigham and Women’s Hospital, Boston, Massachusetts