1 Institute of Population Health Sciences, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London. http://www.whopaysthisdoctor.org Email: v.tzortzioubrown@qmul.ac.uk @VictoriaTzB.
2 Primary and Integrated Care, Health Education England. http://www.whopaysthisdoctor.org@SimonDGregory.
3 St Leonard's Research Practice, Exeter; Emeritus Professor of General Practice, University of Exeter; Former Chair and President, Royal College of General Practitioners.