1. Regional Reference Centre for Coagulation Disorders; Department of Clinical and Experimental Medicine; Federico II University; Naples Italy
2. Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; IRCCS Cà Granda Foundation - Maggiore Hospital Policlinico; Milan Italy
3. Uniformed Services University of the Health Sciences; Bethesda MD USA
4. Department of Paediatrics; University Hospital Frankfurt; Goethe University; Frankfurt Germany