1. Institute for Clinical Immunology and Transfusion MedicineJustus‐Liebig University Giessen Giessen Germany
2. Blood Research Institute Milwaukee Wisconsin USA
3. Department of Transfusion Medicine and Clinical Microbiology, Faculty of Allied Health SciencesChulalongkorn University Bangkok Thailand
4. Department of Children Oncology, Haematology and HaemostaseologyUniversity Leipzig Leipzig Germany
5. Department of Hemostaseology, Division of Pediatric Hematology and Oncology, Faculty of Medicine, Medical CenterUniversity of Freiburg Freiburg Germany