1. Departments of Molecular and Experimental Endocrinology (C.M., M.P., S.B., S.R.S.), Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808
2. Human Physiology (J.E.G.), Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808
3. Nutrition and Diabetes (L.L.), Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808
4. Institut National de la Santé et de la Recherche Médicale Unité 858 (A.M., D.L.), Institut de Médecine Moléculaire de Rangueil, F-31432 Toulouse, France
5. Institut Fédératif de Recherche 31 (A.M., D.L.), Université Paul Sabatier, Université de Toulouse, F-31432 Toulouse, France
6. Institute of Clinical Chemistry (G.S., G.L.), University of Regensburg, 93053 Regensburg, Germany
7. Centre Hospitalier Universitaire de Toulouse (D.L.); F-31432 Toulouse, France