1. Department of Internal Medicine, Division of Family Medicine, LAU Medical Center-Rizk Hospital, Gilbert and Rose Marie Chagoury School of Medicine, Lebanese American University, Beirut P.O. Box 13-5053, Lebanon
2. Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos P.O. Box 13-5053, Lebanon
3. Institut de la Colonne Vertébrale et des Neurosciences (ICVNS), 75116 Paris, France
4. Endocrinology, Diabetes and Metabolism, Private Practice, Haddade Street, Batroun P.O. Box 1400, Lebanon
5. Division of Research, LAU Medical Center-Rizk Hospital, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos P.O. Box 13-5053, Lebanon