We should like to thank Mr Ricardo Morilla, Dr John Swansbury, Dr Julie McCarthy, and other colleagues from the Royal Marsden and St Mary’s Hospitals who have generously contributed illustrations or have read sections of the manuscript. They are individually acknowledged in the legends to the figures.
We should also like to thank Professor Daniel Catovsky who contributed a considerable number of figures.
Estella Matutes, Barbara J Bain, Andrew
Wotherspoon, September 2020