Harold Ellis, CBE, MA, DM, MCh, FRCS, FRCP, FRCOG FACS, is a Clinical Anatomist, at Guy”s, Kings” and St. Thomas School of Biomedical Sciences. He is an Emeritus Professor of Surgery, Charing Cross and Westminster Medical School, London, UK. Stanley Feldman, BSc, MB, FRCA, was an Emeritus Magill Professor of Anaesthesia, Chelsea and Westminster Hospital, London, UK. He created and edited the book Scientific Foundations of Anaesthesia. William Harrop-Griffiths, Imperial College Healthcare NHS Trust, London, UK.