David Barron is the Division Head of Cardiovascular Surgery at the Hospital for Sick Children, Toronto, and came to Canada in June 2019 having been staff at Birmingham Childrens Hospital, UK since 1999. He is Professor of Surgery at the University of Toronto and also the Director of the Adult Congenital Heart Surgery Program at Toronto General Hospital. He graduated from St. Thomas Hospital medical school in London, and did his cardiothoracic training at Papworth Hospital, Southampton, the Royal Brompton Hospital and Great Ormond Street, London. He has a doctorate (MD) from Imperial College, London in biomechanical cardiac assist and is dual qualified in both internal medicine (FRCP) and in cardiothoracic surgery (FRCS CT). He is on the editorial board of five cardiology/cardiothoracic journals and has sat on the council of British and European professional societies. His research interests include Hypoplastic Left Heart Syndrome, Congenitally Corrected Transposition and Complex Pulmonary Atresia. There is a strong programme in 3D imaging as well as 3D printing in Toronto including the use of 3D printed models for surgical training and education. Dr Barron leads the Hands on Surgical Training (HOST) courses that are run for international delegates every year.