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