[1] Minist Natl Guard Hlth Affairs, King Abdulaziz Med City, Dept Oncol, Riyadh, Saudi Arabia
[2] Cardiff Univ, Sch Med, Cardiff, Wales
[3] King Saud Bin Abdulaziz Univ Hlth Sci, Coll Med, Riyadh, Saudi Arabia
[4] Minist Natl Guard Hlth Affairs, King Abdulaziz Med City, Dept Oncol, Div Hematol & HSCT, Riyadh, Saudi Arabia
[5] King Abdullah Int Med Res Ctr, Riyadh, Saudi Arabia
[6] Minist Natl Guard Hlth Affairs, King Abdulaziz Med City, Dept Oncol Nursing, Riyadh, Saudi Arabia