1. Endocrinology, Diabetes and Metabolic Diseases, Avicenne Hospital, Bobigny, France.
2. Gastroenterology Department, Avicenne Hospital, Bobigny, France.
3. Physiology Department, Université René Descartes, Paris V, Paris, France.
4. Diabetes, Nutrition and Endocrinology Department, Delafontaine Hospital, Saint Denis, France.
5. Surgical Department, Delafontaine Hospital, Saint Denis, France.