RT Journal Article SR Electronic T1 Importance of the arc of Riolan in children with severe middle aortic syndrome JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP archdischild-2021-321844 DO 10.1136/archdischild-2021-321844 A1 Zainab Arslan A1 Premal Amrishkumar A Patel A1 Kishore Minhas A1 Kjell Tullus A1 Jelena Stojanovic YR 2021 UL http://adc.bmj.com/content/early/2021/04/14/archdischild-2021-321844.abstract AB