1Institute of Global Health Innovation, Imperial College London, London, UK.
2Department of Surgery and Cancer, Imperial College London, London, UK.
3Birmingham Health Partners Centre for Regulatory Science and Innovation, Birmingham, UK.
4College of Medicine and Health, University of Birmingham, Birmingham, UK.
5Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
6Google Research, London, UK.
7Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
8Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
9Google Health, Palo Alto, CA, USA.
10Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.
11Department of Epidemiology and Data Science, Amsterdam University Medical Centres, Duivendrecht, the Netherlands.
12Institute of Global Health Innovation, Imperial College London, London, UK. h.ashrafian@imperial.ac.uk.
13Department of Surgery and Cancer, Imperial College London, London, UK. h.ashrafian@imperial.ac.uk.