1. Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands
2. Department of Experimental Immunohematology, Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, Amsterdam, the Netherlands
3. Department of Immunocytology, Sanquin Diagnostic Services, Amsterdam, the Netherlands
4. Department of Immunohematology Diagnostics, Sanquin Diagnostic Services, Amsterdam, the Netherlands
5. Department of Pediatric Oncology, Erasmus Medical Center–Sophia Children's Hospital, Rotterdam, the Netherlands