1. 1Medical Directorate, NHS Education Scotland, 101 Westport, Edinburgh EH3 9DN, UK
2. 2Scottish Centre for Simulation and Clinical and Human Factors, Forth Valley Royal Hospital, NHS Forth Valley, Stirling Road, Larbert FK54WR, UK
3. 3University of Edinburgh Medical School, University of Edinburgh, Little France Crescent, Edinburgh EH16 4TJ, UK
4. 4Medical Directorate, NHS Education Scotland, 89 Hydepark Street, Glasgow G3 8BW, UK