1. Department of Medicine, College of Medicine, Shaqra University, Shaqra, Saudi Arabia
2. Department of Medicine, King Abdulaziz Medical City National Guard Health Affairs Riyadh Saudi Arabia, College of Medicine, King Saud bin Abdulaziz University for Health Science Riyadh Saudi Arabia, Riyadh, Saudi Arabia
3. Department of Oncology, King Abdulaziz Medical City, Ministry of National Guard Health Affairs Riyadh, King Abdullah International Medical Research Center, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
4. Department of Oncology, King Abdulaziz Medical City, Ministry of National Guard Health Affairs Riyadh, Riyadh, Saudi Arabia
5. Department of Medicine, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
6. Department of Medicine, College of Medicine, Imam Mohammad Ibn Saud Islamic University, Riyadh, Saudi Arabia