1. Department of Internal Medicine; Division of Endocrinology; Calcium Metabolism and Osteoporosis Program; WHO Collaborating Center for Metabolic Bone Disorders; American University of Beirut Medical Center; Beirut Lebanon
2. Department of Rheumatology; Hotel Dieu de France; Beirut Lebanon
3. Department of Internal Medicine; American University of Beirut Medical Center; Beirut Lebanon
4. Department of Endocrinology; Hotel Dieu de France; Beirut Lebanon
5. Division of Clinical Biochemistry and Immunology; Mayo Clinic; Rochester MN USA
6. Department of Endocrinology and Metabolism; University Hospital of Odense; Odense Denmark
7. Department of Healthcare Policy and Research; Weill Cornell Medicine; NY USA
8. Weill Cornell Medicine; Doha Qatar
9. Department of Pathology and Laboratory Medicine; American University of Beirut Medical Center; Beirut Lebanon