1. Department of Pharmacology and Clinical Pharmacy, College of Medicine and Health Science, Sultan Qaboos University, Muscat 123, Oman
2. Department of Pharmacy, Sultan Qaboos University Hospital, Muscat 123, Oman
3. Department of Medicine, Sultan Qaboos University Hospital, Muscat 123, Oman
4. Internal Medicine Residency Training Program, Oman Medical Specialty Board, Muscat 130, Oman
5. Department of Endocrinology, Karolinska University Hospital, 17176 Stockholm, Sweden
6. Department of Molecular Medicine and Surgery, Karolinska Institute, 17176 Stockholm, Sweden