<p><b>Anna Donald</b>, late of Bazian Ltd, London<br /> <br /> <b>Michael Stein</b> is Chief Medical Officer, Map of Medicine, London, and Medical Advisor, Hearst Business Media, Hearst Corporation, New York<br /> <br /> <b>Ciaran Scott Hill</b> is Neurosurgery Registrar, The Royal London Hospital, Honorary Senior Lecture in Neuroscience, Univesity College London, and Prehospital Care Physician, London Air Ambulance</p> <p><b>Selina Chavda</b> is NIHR Academic Clinical Fellow in Haemato-Oncology, The Royal Marsden NHS Foundation Trust and the Institute of Cancer Research</p>