1. Leonard D. Schaeffer Professor of Health Care Policy, Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts, USA
2. Warren Alpert Foundation Professor of Health Care Policy, Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts, USA
3. Professor of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
4. Division of Plastic Surgery, Department of Surgery, Northwestern Feinberg School of Medicine, Chicago, Illinois, USA