1. Public health & Community medicine Department, Faculty of Medicine, Fayoum University, Fayoum, Egypt
2. Medical Microbiology and Immunology Department, faculty of Medicine, Fayoum University, Fayoum, Egypt
3. General director of Jordanian Experts for training, Jordan
4. Supervisor at Rafidia Surgical Hospital – MOH, Palestine
5. National Emergency Coordinator in Ministry of public health, Yemen
6. Director of Preventive Health, Ministry of Health, Tunisia
7. General Directorate of Quality, Development and Accreditation, Federal Ministry of Health, Sudan