1. Peninsula College of Medicine & Dentistry, University of Exeter; Peninsula Technology Assessment Group (PenTAG); Noy Scott House Barrack Road Exeter Devon UK EX2 5DW
2. University of Alberta; Department of Medicine; 2F1.19 Walter C Mackenzie Health Sciences Centre 8440 - 112 Street Edmonton Alberta Canada T6G 2R7
3. Vancouver Coastal Health Authority; Public Health; Vancouver BC Canada
4. University of British Columbia; Department of Anesthesiology, Pharmacology and Therapeutics; 2176 Health Sciences Mall Vancouver BC Canada V6T 1Z3