1. Lecturer of Clinical Hematology, Oncology Center Mansoura University, Faculty of Medicine, Mansoura University, Mansoura, Egypt
2. Lecturer of Medical Oncology, Oncology Center Mansoura University, Faculty of Medicine, Mansoura University, Mansoura, Egypt
3. Clinical Hematology Specialist, Internal Medicine department, Damietta General Hospital,; Clinical Hematology Specialist, Dar EL Salam Oncology Center, Cairo, Egypt
4. Professor of Medical Oncology, Oncology Center Mansoura University, Faculty of Medicine, Mansoura University, Mansoura, Egypt