1. From the Division of Clinical Epidemiology (A.J.G.H., K.W., A.F., S.M.H.), University of Texas Health Sciences Center, San Antonio, Tex; Leadership Sinai Centre for Diabetes (A.J.G.H.), Mt. Sinai, Hospital, Toronto, Ontario, Canada; Division of Research (A.J.K.), Kaiser Permanente, Oakland, Calif; and Department of Public Health Sciences (R.B.D., L.E.W.), Wake Forest University School of Medicine, Winston Salem, NC.