1. Department of Cardiac Surgery, University of Michigan, Ann Arbor
2. Department of Economics, Hunter College, New York, New York
3. The Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine, Hanover, New Hampshire
4. Department of Medicine, George Washington University, Washington, DC
5. Department of Health Policy and Management, George Washington University, Washington, DC
6. Department of Health Policy and Management, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
7. Department of Economics, Dartmouth College, Hanover, New Hampshire