1. Knowledge and Evaluation Research Unit (M.H.M., R.J.M., L.M.S., M.A.L., N.O.A.E., V.M.M.), Rochester, Minnesota 55905
2. Division of Preventive Medicine (M.H.M.), Rochester, Minnesota 55905
3. Division of Endocrinology, Diabetes, Metabolism, Nutrition (M.T.D., V.M.M.), Rochester, Minnesota 55905
4. Division of General Internal Medicine (K.F.M.), Rochester, Minnesota 55905
5. Mayo Clinic Libraries (P.J.E.), Mayo Clinic, Rochester, Minnesota 55905
6. Department of Internal Medicine (A.H.), University of North Dakota, Fargo, North Dakota 58102
7. Department of Epidemiology (M.A.P., T.L.), Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205