1. Department of Laboratory Medicine; Diagnostic Clinic; University Hospital of North Norway; Tromsø Norway
2. Finnmark Hospital Trust; Finnmark Norway
3. Platelet Immunology Department; French Blood Services of Brittany; Rennes France
4. Center for Clinical Transfusion Medicine; University of Tuebingen; Tuebingen Germany
5. Institute of Immunology and Transfusion Medicine; University Hospital Greifswald; Greifswald Germany
6. NHS Blood and Transplant; Bristol UK
7. Hospital for Sick Children; St. Michael's Hospital; Toronto ON Canada
8. University Health Network; University of Toronto; Toronto ON Canada
9. Center for Innovation; Canadian Blood Services; Toronto ON Canada
10. NHS Blood and Transplant; Oxford University Hospitals and University of Oxford; Oxford UK
11. Division of Hematology and Thromboembolism; McMaster University; Hamilton ON Canada
12. Australian Red Cross Blood Service; Brisbane QLD Australia
13. Weill Cornell Medicine; New York NY USA
14. Division of Hematology-Oncology; Centre Hospitalier Universitaire Sainte-Justine; University of Montreal; Montreal QC Canada
15. Institut National de la Transfusion Sanguine; Paris France
16. Department of Obstetrics; Leiden University Medical Center; Leiden The Netherlands
17. Fetal Medicine Unit; Mount Sinai Hospital; Toronto ON Canada
18. Royal Children's Hospital; Melbourne VIC Australia
19. Department of Medicine; Mount Sinai Hospital; Toronto ON Canada
20. Department of Obstetric Medicine; Mount Sinai Hospital; Toronto ON Canada
21. Department of Clinical Immunology and Transfusion Medicine; Regional and University Laboratories Region Skåne; Lund Sweden