1. Department of Pediatrics and
2. Department of Pediatrics, Sophia Children’s Hospital, Erasmus Medical Center, Rotterdam, Netherlands;
3. Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden University, Leiden, Netherlands;
4. Clinical Laboratory, Reinier de Graaf Gasthuis, Delft, Netherlands;
5. Department of Experimental Immunohematology, Sanquin, Amsterdam, Netherlands