1. Department of Rheumatology Sudan Medical Specialization Council Khartoum Sudan
2. Rheumatology Department Security Forces Hospital Makkah Saudi Arabia
3. Department of Clinical Medicine Medical and Cancer Research Institute Nyala Sudan
4. Faculty of Medicine Al Fashir University Al Fashir Sudan
5. Faculty of Medicine University of Gezira Wad Madani Sudan
6. Department of Histopathology Khartoum Histocentre Khartoum Sudan
7. Department of Rheumatology Omdurman Military Hospital Khartoum Sudan