1. Division of Metabolism, Endocrinology, and Diabetes (M.R.H., R.J.K.),Ann Arbor, Michigan 48109;
2. Division of Hematology/Oncology (M.R.H., J.J.G.), Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109;
3. Departments of Biostatistics (M.B., D.Y.), Ann Arbor, Michigan 48109;
4. National Cancer Database (A.K.S.), The American College of Surgeons Commission on Cancer, Chicago, Illinois 60611
5. Division of Nuclear Medicine (J.C.S.), Department of Radiology, University of Michigan, Ann Arbor, Michigan 48109;
6. Department of Surgery (G.M.D.), Boston University, Boston, Massachusetts 02215;
7. Health Management and Policy (J.J.G.), School of Public Health, University of Michigan, Ann Arbor, Michigan 48109;