Published on in Vol 13, No 4 (2011): Oct-Dec
1 Department of Medicine, University of Toronto, Toronto, ON, Canada
2 The Keenan Research Centre, Li Ka Shing Knowledge Institute, St Michael’s Hospital, Toronto, ON, Canada
3 Division of Respirology, Department of Medicine, St. Michael’s Hospital, Toronto, ON, Canada
4 Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada
5 Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON, Canada
6 Division of Geriatrics, Department of Medicine, St Michael’s Hospital, Toronto, ON, Canada