1. Department of Clinical Immunology Sudan Medical Specialization Board (SMSB) Khartoum Sudan
2. Departments of Microbiology, Faculty of Medicine African International University (AIU) Khartoum Sudan
3. Faculty of Medicine Sudan University of Science and Technology Khartoum Sudan
4. Faculty of Medicine Alfashir University Alfashir Sudan
5. Departments of Clinical Medicine Medical and Cancer Research Institute Nyala Sudan
6. Department of Clinical Immunology Royal Care International Hospital Khartoum Sudan