1. Institut National de la Santé et de la Recherche Médicale U561, St. Vincent de Paul Hospital, Paris, France
2. Department of Molecular Medicine, Division of Endocrinology & Diabetes, Karolinska Hospital, Stockholm, Sweden
3. Metabolism Unit, CNR Institute of Clinical Physiology, University of Pisa, Pisa, Italy
4. Unit of Endocrinology and Metabolism, University of Louvain, Brussels, Belgium
5. Howard Hughes Medical Institute, University of Chicago, Chicago, Illinois
6. Department of Endocrinology and Metabolism, Hebrew University Hadassah Medical Center, Jerusalem, Israel