1. Damietta Dermatology and Leprosy Hospital Ministry of Health and Population Damietta Egypt
2. Dermatology, Venereology and Andrology Department Faculty of Medicine, Al‐Azhar University Damietta Egypt
3. Clinical pathology department Faculty of Medicine, Al‐Azhar University Cairo Egypt
4. Clinical pathology department Faculty of Medicine, Al‐Azhar University Damietta Egypt