S. Hassan1, R. Palla2, C. Valsecchi3, I. Garagiola3, A. El-Beshlawy4, M. Elalfy5, V. Ramanan6, P. Eshghi7, S.C. Gouw1,8, P.M. Mannucci2,3, F.R. Rosendaal1, F. Peyvandi2,3

1Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands; 2Università degli Studi di Milano, Department of Pathophysiology and Transplantation, Milan, Italy; 3Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Haemophilia and Thrombosis Centre and Luigi Villa Foundation, Milan, Italy; 4Pediatric Hematology Department, Cairo University Pediatric Hospital, Cairo, Egypt; 5Faculty of Medicine, Ain Shams Center, University – Department Pediatrics, Cairo, Egypt; 6Jehangir Clinical Development Centre, Department of Hematology, Jehangir Hospital Premises, Pune, India; 7Congenital Pediatric Hematologic Disorders Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; 8Amsterdam University Medical Center, University of Amsterdam, Emma Children’s Hospital, Pediatric Hematology, Amsterdam, the Netherlands.