1. Assistant Lecturer of Anaesthesia and Surgical Intensive Care, Alexandria Faculty of Medicine, Alexandria, Egypt
2. Anaesthesia and Surgical Intensive Care, Alexandria Faculty of Medicine, Alexandria, Egypt
3. Associate Professor of Anaesthesia and Surgical Intensive Care, Alexandria Faculty of Medicine, Alexandria, Egypt
4. Lecturer of Clinical Pathology, Alexandria Faculty of Medicine, Alexandria, Egypt
5. Lecturer of Anaesthesia and Surgical Intensive Care, Alexandria Faculty of Medicine, Alexandria, Egypt