1. Department of Medicine King Abdulaziz Medical City‐ National Guard Health Affairs Riyadh Saudi Arabia
2. Department of Biostatistics‐ Epidemiology and Scientific Computing King Faisal Specialist Hospital & Research Centre Riyadh Saudi Arabia
3. Pediatric Hematology/Oncology Department King Faisal Specialist Hospital & Research Centre Riyadh Saudi Arabia
4. Pathology And Laboratory Medicine Department King Faisal Specialist Hospital & Research Centre
5. School of Medicine University College Dublin Dublin Ireland