1. Department of Clinical Epidemiology Leiden University Medical Center Leiden The Netherlands
2. Lord Kelvin Adam Smith Fellow, School of Interdisciplinary Studies University of Glasgow Glasgow UK
3. School of Nursing Trinity Western University Langley Canada
4. Centre for Health Evaluation & Outcome Sciences Providence Health Care Research Institute Vancouver Canada
5. British Columbia Provincial Bleeding Disorders Program ‐ Adult Division St. Paul’s Hospital Vancouver Canada
6. Department of Pediatric Hematology, Emma Children’s Hospital Amsterdam UMC, University of Amsterdam Amsterdam The Netherlands
7. Sanquin Research Center for Clinical Transfusion Research Leiden The Netherlands
8. Sahlgrenska Academy University of Gothenburg Gothenburg Sweden