1. Department of Internal Medicine, College of Medicine, King Faisal University, Al-Hasa, Saudi Arabia
2. Dubai Medical College, Dubai, United Arab Emirates
3. Department of Medicine, College of Medicine, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
4. Royal Hospital, Muscat, Oman
5. Department of Nephrology, Salmaniya Medical Complex, Manama, Bahrain
6. Division of Nephrology, Hamad General Hospital, Doha, Qatar
7. Division of Nephrology, Jahra Hospital, Jahra, Kuwait