1. Department of Family and Community Medicine, Faculty of Medicine, Northern Border University, Arar, Kingdom of Saudi Arabia
2. Department of Public Health and Community Medicine, Faculty of Medicine, Benha University, Benha, Egypt
3. Dermatology and Venereology Department, Faculty of Medicine, Northern Border University, Arar, Kingdom of Saudi Arabia
4. Faculty of Medicine, Northern Border University, Arar, Kingdom of Saudi Arabia
5. Community Medicine Department, Damietta Faculty of Medicine, Al-Azhar University, Cairo, Egypt