1. Department of Medical Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Kingdom of Saudi Arabia
2. Department of Medicine, College of Medicine, Qassim University, Buraidah 51432, Kingdom of Saudi Arabia
3. Department of Medical Oncology, King Salman Specialist Hospital, Hail 55471, Kingdom of Saudi Arabia
4. Department of Medicine, Security Forces Hospital, Ministry of Interior, Riyadh 11481, Kingdom of Saudi Arabia
5. College of Medicine, AL Faisal University, Riyadh 11533, Kingdom of Saudi Arabia
6. Oncology Centre, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Kingdom of Saudi Arabia