David Hamilton was a surgeon whose major interest became surgery for congenital heart defects. He built up an outstanding department at the Royal Liverpool Children's Hospital and was the foundation professor of cardiac surgery at Edinburgh. He was born on 22 June 1931 to John Alexander King Hamilto

Professor Marc de Leval, a leading paediatric heart surgeon, established the heart transplant unit at Great Ormond Street Hospital, London, and was a pioneer of patient safety and risk management research. He was born on 16 April 1941 in the village of Charneux in Belgium, the eldest of seven childr