1. Section of Vascular Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, NH (J.A.C., P.P.G.).
2. VA Quality Scholars Program, Veterans Health Association, White River Junction, VT. (J.A.C., R.K., S.W.T.)
3. VA Outcomes Group, Veterans Health Association, White River Junction, VT. (J.A.C., R.K., S.W.T., P.P.G.)
4. Geisel School of Medicine at Dartmouth, Hanover, NH (J.A.C., R.K., S.W.T., C.J.M., P.P.G.).
5. The Dartmouth Institute for Health Policy and Clinical Practice, Lebanon, NH (J.A.C., R.K., S.W.T., K.O.M., A.M.A., N.E.M., C.G.B., J.S.S., P.P.G.).
6. Philadelphia College of Osteopathic Medicine, PA (K.S.J.).
7. Department of Economics, Dartmouth College, Hanover, NH (J.S.S.).