1. Plastic and Reconstructive Surgery Department, Faculty of Medicine, Helwan University, Cairo, Egypt;
2. Plastic and Reconstructive Surgery Department, Faculty of Medicine (Girls), Al-Azhar University, Cairo, Egypt;
3. Plastic Surgery Department, Faculty of Medicine, Al-Azhar University, Damitta, Egypt;
4. General Surgery Department, Faculty of Medicine (Girls), Al-Azhar University, Cairo, Egypt;
5. Plastic and Reconstructive Surgery Department, Faculty of Medicine, Port-Said University, Port-Said, Egypt