1. Royal Lancaster Infirmary; Patient Safety Research; Pointer Court 1, Ashton Road Lancaster UK LA1 1RP
2. Lancaster University; Faculty of Health and Medicine, Furness Building; Lancaster UK LA1 4YG
3. North Manchester General Hospital; Department of Anaesthetics; Delaunays Road Crumpsall Manchester Lancashire UK M8 5RB
4. Royal Lancaster Infirmary; Department of Anaesthetics; Lancaster UK