1. Aerosol Research Laboratory of Alberta, Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2G8.
2. Institute for Reconstructive Sciences in Medicine, Misericordia Community Hospital, Edmonton, Alberta, Canada, T5R 4H5.
3. Department of Radiology and Diagnostic Imaging, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada, T6G 2B7.