1. Dasman Diabetes Institute and Department of Medicine, Faculty of Medicine, the University of Kuwait, Kuwait, Kuwait
2. Obesity, Endocrine, and Metabolism Center, King Fahad Medical City, Faculty of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
3. Department of Endocrinology, Yas Clinic Khalifa City, Abu Dhabi, United Arab Emirates
4. Department of Medicine, Dubai Medical College, Dubai, United Arab Emirates