1. Department of Epidemiology (I.M., J.A.C., E.S., Y.S., C.H.B., L.H.K., K.A.F., J.M.Z.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
2. University of Minnesota (I.M., J.A.C., E.S., Y.S., C.H.B., L.H.K., K.A.F., J.M.Z.), VA Medical Center, Minneapolis, Minnesota 55417
3. Department of Radiology (M.A.P., K.E.E.), McMaster University, Hamilton, Ontario, Canada L8N 3Z5
4. Division of Endocrinology and Metabolism (C.L.G.), University of Pittsburgh’s Department of Medicine, Pittsburgh, Pennsylvania 15261
5. Tobago Health Studies Office (B.H.G., A.L.P., V.W.W.), Scarborough, Tobago, Trinidad and Tobago