Thoms Gavin, Ellis Rebecca, Afolabi Gbenga, Graham Mark
Northumbria Healthcare National Health Service Foundation Trust, Department of Anaesthesia, Hexham General Hospital, Corbridge Road, Hexham, Northumberland NE46 1QJ, UK.
Med Educ. 2012 Nov;46(11):1116-7. doi: 10.1111/medu.12002.