1. Laboratory of Investigation on Metabolism and Diabetes/Gastrocentro (M.M.O.L., J.C.P., S.R.G., B.D.A., B.G.) State University of Campinas (UNICAMP), Campinas, São Paulo, 13081-970, Brazil;
2. Departments of Surgery (J.C.P., E.A.C.) State University of Campinas (UNICAMP), Campinas, São Paulo, 13081-970, Brazil;
3. Departments of Internal Medicine (S.M.A., B.D.A.), State University of Campinas (UNICAMP), Campinas, São Paulo, 13081-970, Brazil;
4. Division of Metabolism, Endocrinology, and Nutrition (S.E.K.), Department of Medicine, Veterans Affairs Puget Sound Health Care System and University of Washington, Seattle, Washington 98108