1. Boston Hemophilia Center; Boston Children’s Hospital; Boston MA USA
2. Wayne State University; Detroit MI USA
3. University of Miami School of Medicine; Miami FL USA
4. Nationwide Children’s Hospital Division of Hematology/Oncology/BMT; The Ohio State University School of Medicine; Columbus OH USA
5. Children’s National Health System; Washington DC USA
6. University of Oklahoma Health Sciences Center; Oklahoma City OK USA
7. St. Jude Children’s Research Hospital; Memphis TN USA
8. The Children’s Hospital of Philadelphia; Philadelphia PA USA
9. The Hemophilia Center at Oregon Health & Science University; Portland OR USA
10. University of Colorado Hemophilia and Thrombosis Center; Aurora CO USA
11. Department of Health Research Methods, Evidence, and Impact; McMaster University; Hamilton ON Canada
12. Department of Medicine; McMaster University; Hamilton ON Canada