Saira Ghafur1, Emilia Grass2, Nick R Jennings3, Ara Darzi2. 1. Institute of Global Health Innovation and National Institute for Health Research Patient Safety Translational Research Centre, Imperial College London, London SW7 2AZ, UK. Electronic address: saira.ghafur13@imperial.ac.uk. 2. Institute of Global Health Innovation and National Institute for Health Research Patient Safety Translational Research Centre, Imperial College London, London SW7 2AZ, UK. 3. Department of Computing and Department of Electrical and Electronic Engineering, Imperial College London, London, UK.