1. Sanquin Research Department of Experimental ImmunohematologyAmsterdam The Netherlands
2. Landsteiner Laboratory Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
3. Department of Pediatric Hematology Wilhelmina Children’s Hospital University Medical Center Utrecht Utrecht The Netherlands
4. Department of Medical Statistics Leiden University Medical Center Leiden The Netherlands
5. Department of Immunohematology Diagnostics Sanquin Diagnostic Services Amsterdam The Netherlands
6. Sanquin Research Center for Clinical Transfusion Research Leiden The Netherlands
7. Department of Clinical Epidemiology Leiden University Medical Center Leiden The Netherlands
8. Princess Maxima Pediatric Oncology Center Utrecht Netherlands
9. Department of Immunohematology and Blood Transfusion Leiden University Medical Center Leiden The Netherlands