Professor of Anesthesiology, Pain management and Surgical intensive care, Faculty of medicine, Cairo university. Professor and Coordinator at pain management unit, Kasr Al- Aini hospital, Cairo University. Pain management consultant and Coordinator of the pain management unit at Naser Institute hospital. Pain management consultant at Dar Al Fouad Hospital (JCI certified). Head of pain management unit at Elaraby hospital (JCI certified). Director of Surgical intensive care unit, Kasr Al-Aini hospital, Cairo university.