1. Emergency Medicine Department, National University Hospital, National University Health System, Singapore; Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
2. Department of Ophthalmology, National University Hospital, National University Health System, Singapore; Yong Loo Lin School of Medicine, National University of Singapore, Singapore
3. School of Health Professions Education, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands