[1
]
Royal College Emergency Medicine Residency Training Program, University of British
Columbia, Vancouver, British Columbia, Canada.
[2
]
Department of Emergency Medicine, University of British Columbia, Vancouver, British
Columbia, Canada.
[3
]
Center for Clinical Epidemiology and Evaluation, Vancouver Coastal Health Research
Institute, Vancouver, British Columbia, Canada.
[4
]
Department of Emergency Medicine, Vancouver General Hospital, Vancouver, British Columbia,
Canada.
[5
]
Department of Emergency Medicine, University of British Columbia, Vancouver, British
Columbia, Canada; Center for Clinical Epidemiology and Evaluation, Vancouver Coastal
Health Research Institute, Vancouver, British Columbia, Canada; Department of Emergency
Medicine, Vancouver General Hospital, Vancouver, British Columbia, Canada. Electronic
address: chohl@mail.ubc.ca.