1. Department of Emergency Medicine University of British Columbia VancouverBritish Columbia
2. Centre for Clinical Epidemiology & Evaluation Vancouver Coastal Health Research Institute Vancouver British Columbia
3. Emergency DepartmentVancouver General Hospital VancouverBritish Columbia
4. Department of Pharmaceutical Sciences University of British Columbia VancouverBritish Columbia
5. Department of Pharmaceutical Services The Ottawa Hospital Ottawa Ontario
6. Clinical Pharmacy Services Vancouver General Hospital VancouverBritish Columbia
7. Department of Emergency Medicine and of Biomedical and Molecular Sciences Queen's University Kingston Ontario
8. Department of Emergency Medicine University of Ottawa Ottawa Ontario Canada