1. Consultant Medical Oncologist Department of Oncology, King Faisal Specialist Hospital and Research Centre P. O. Box 3354 Riyadh, Saudi Arabia
2. Resident Department of Surgery, King Faisal Specialist Hospital and Research Centre P. O. Box 3354 Riyadh, Saudi Arabia
3. Consultant General and Thoracic Surgeon Department of Surgery, King Faisal Specialist Hospital and Research Centre P. O. Box 3354 Riyadh, Saudi Arabia
4. Head, Section of Radiation Oncology Department of Oncology, King Faisal Specialist Hospital and Research Centre P. O. Box 3354 Riyadh, Saudi Arabia