Affiliation: | 1. Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia;2. College of Medicine, Alfaisal University, Riyadh, Saudi Arabia;3. Department of Pediatric Hematology/Oncology;4. Department of Biological and Medical Research, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia;5. Department of Medicine, Queen's University, Kingston, Ontario, Canada;6. Department of Medicine, University Health Network and University of Toronto, Ontario, Canada |