1. 1International Blood Group Reference Laboratory, NHS Blood and Transplant, Bristol, United Kingdom
2. 2School of Biochemistry, University of Bristol, Bristol, United Kingdom
3. 3National Institute for Health Research Blood and Transplant Research Unit in Red Blood Cell Products, University of Bristol, Bristol, United Kingdom
4. 4Bristol Institute of Transfusion Sciences, NHS Blood and Transplant, Bristol, United Kingdom
5. 5Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
6. 6Clinical Biotechnology Centre, NHS Blood and Transplant, Bristol, United Kingdom
7. 7Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
8. 8Research and Development, Nanion Technologies, Munich, Germany
9. 9Deutsches Rotes Kreuz, Institute Bad Kreuznach, Bad Kreuznach, Germany
10. 10Kuwait Central Blood Bank, Hawally, Kuwait
11. 11Red Cell Immunohaematology, NHS Blood and Transplant, Birmingham, United Kingdom
12. 12Haematology Department at Birmingham Women’s Hospital, Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham, United Kingdom
13. 13NHS Blood and Transplant, Bristol, United Kingdom
14. 14College of Medical & Dental Sciences, University of Birmingham, Birmingham, United Kingdom
15. 15Fetal Medicine Centre, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, United Kingdom