[1
]
University of Toronto, 27, King's College Circle, Toronto, Ontario M5S 1A1, Canada.
[2
]
Division of Cardiology, St. Michael's Hospital, University of Toronto, 30, Bond Street,
Toronto, Ontario M5B 1W8, Canada.
[3
]
Applied Health Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital,
Institute of Health Policy, Management and Evaluation, University of Toronto, 30,
Bond Street, Toronto, Ontario M5B 1W8, Canada.
[4
]
Division of Respirology, St. Michael's Hospital, University of Toronto, 30, Bond Street,
Toronto, Ontario M5B 1W8, Canada.
[5
]
Department of Medical Imaging, St. Michael's Hospital, University of Toronto, 30,
Bond Street, Toronto, Ontario M5B 1W8, Canada; Li Ka Shing Knowledge Institute, St.
Michael's Hospital, Toronto, Ontario M5B 1T8, Canada.
[6
]
Department of Medical Imaging, St. Michael's Hospital, University of Toronto, 30,
Bond Street, Toronto, Ontario M5B 1W8, Canada; Li Ka Shing Knowledge Institute, St.
Michael's Hospital, Toronto, Ontario M5B 1T8, Canada. Electronic address: devad@smh.ca.