1. From the Metabolic and Atherosclerosis Research Center, Cincinnati, OH (E.A.S.); Global Development (N.H., S.M.W., R.S.) and Biostatistics (F.X.), Amgen Inc, Thousand Oaks, CA; and Carbohydrate & Lipid Metabolism Research Unit, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa (F.J.R.).