1 Surgical Informatics, Centre for Medical Informatics, Royal Infirmary of Edinburgh, University of Edinburgh, Edinburgh, UK Division of Nursing, Midwifery and Social Work, School of Health Sciences, Jean McFarlane Building, University Place, University of Manchester, Manchester, UK Institute of Cancer and Genomics Sciences, University of Birmingham, Birmingham, UK Surgical Informatics, Centre for Medical Informatics, Royal Infirmary of Edinburgh, University of Edinburgh, Edinburgh, UK.