1. Department of Public Health and Community Medicine, Benha University, Benha, Egypt
2. Department of Public Health, Community, Environmental and Occupational Medicine, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
3. Department of Basic Medical Sciences, Faculty of Medicine, King Salman International University, South Sinai, Egypt
4. Department of Public Health and Community Medicine, Faculty of Medicine, Kasr El Aini & Suez University, Egypt
5. Department of Medical Education, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
6. Department of Basic Medical Sciences, College of Medicine, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia