[1] King Saud bin Abdulaziz Univ Hlth Sci, King Abdullah Int Med Res Ctr, Dept Oncol, Minist Natl Guard Hlth Affairs, Riyadh, Saudi Arabia
[2] King Saud bin Abdulaziz Univ Hlth Sci, King Abdullah Int Med Res Ctr, Dept Biostat & Bioinformat, Riyadh, Saudi Arabia
[3] Imam Mohammad Ibn Saud Islamic Univ, Coll Med, Dept Med, Riyadh, Saudi Arabia
[4] King Abdullah Int Med Res Ctr, Adult Hematol & Oncol Div, Dept Med, Minist Natl Guard Hlth Affairs, Al Hasa, Saudi Arabia
[5] King Fahad Cent Hosp, Dept Med, Jeddah, Saudi Arabia