Affiliation: | (1) Department of General Surgery, Central Manchester and Manchester Children’s University Hospitals NHS Foundation Trust, and the University of Manchester, Manchester Royal Infirmary, Oxford Road, Manchester, M13 9WL, UK;(2) Haemophilia Centre, Central Manchester and Manchester Children’s University Hospitals NHS Foundation Trust, and the University of Manchester, Manchester Royal Infirmary, Oxford Road, Manchester, M13 9WL, UK;(3) James Paget University Hospital, Lowestoft Road, Gorleston, Great Yarmouth, Norfolk, NR31 6LA, UK |