1. General and Plastic Surgery Department, Military Medical Academy, Cairo, Egypt
2. Oncology Diagnostic Unit, Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
3. Hepatology and Gastroenterology Unit, Internal Medicine Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
4. Armed Forces College of Medicine, Cairo, Egypt
5. Clinical Oncology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt