1. Centre for Medical Informatics, Usher Institute, University of Edinburgh, Edinburgh, United Kingdom
2. Institute for Adaptive and Neural Computation, School of Informatics, University of Edinburgh, Edinburgh, United Kingdom
3. Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
4. Department of Orthopaedics and Traumatology, the University of Hong Kong, Hong Kong, China
5. Health Data Research UK, London, United Kingdom
6. Institute of Health Informatics, University College London, London, United Kingdom