1 Saudi Stem Cell Donor Registry, King Abdullah International Medical Research Center / College of Science and Health Professions, King Saud bin Abdulaziz University for Health Sciences / King Abdulaziz Medical City-Riyadh, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia.
2 Division of Adult Hematology & HSCT, Department of Oncology, King Abdulaziz Medical City-Riyadh, Ministry of National Guard Health Affairs / College of Medicine, King Saud bin Abdulaziz University for Health Sciences / King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.
3 Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City-Riyadh, Ministry of National Guard Health Affairs / College of Medicine, King Saud bin Abdulaziz University for Health Sciences / King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.