1. National Genetic Centre, Royal Hospital, Muscat, Oman
2. Institute of Genetic Medicine, Newcastle University, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
3. The Renal Medicine Department, Royal Hospital, Muscat, Oman
4. Centre of Studies and Research, Ministry of Health, Muscat, Oman
5. The Renal Dialysis Centre, Royal Hospital, Muscat, Oman