1. Robarts Research Institute, Western University, London, Canada
2. Department of Medical Biophysics, Western University, London, Canada
3. Department of Medical Imaging, Western University, London, Canada
4. Division of Respirology, Department of Medicine, Western University, London, Canada
5. Department of Physics, Toronto Metropolitan University, Toronto, Canada
6. Division of Respirology, Department of Medicine, McMaster University and Firestone Institute for Respiratory Health, St Joseph’s Health Care, Hamilton, Canada