1. Department of Physiology, Endocrinology-Metabolism, Université Catholique de Louvain, Brussels, Belgium
2. INSERM U342, St. Vincent de Paul Hospital, Paris, France
3. Department of Molecular Medicine, Division of Endocrinology & Diabetes, Karolinska Hospital, Stockholm, Sweden
4. Metabolism Unit, CNR Institute of Clinical Physiology, University of Pisa, Pisa, Italy
5. Department of Biochemistry and Molecular Biology and Howard Hughes Medical Institute, University of Chicago, Chicago, Illinois
6. Department of Endocrinology & Metabolism, Hebrew University Hadassah Medical Center, Jerusalem, Israel