1. Regional Reference Centre for Inherited Bleeding Disorders University Hospital of Parma Parma Italy
2. Haemophilia and Transfusion Centre 'Bufalini’ Hospital Cesena Italy
3. SSD Malattie Emorragiche Congenite IRCCS Azienda Ospedaliero‐Universitaria di Bologna Bologna Italy
4. Unit of Medical Genetics University Hospital of Parma Parma Italy