1. Respiratory Technology, Woolcock Institute of Medical Research, Sydney, Australia
2. Macquarie Medical School, Department of Biological Sciences, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, Australia
3. Resyca B.V, Enschede, The Netherlands
4. Medspray B.V, Enschede, The Netherlands
5. Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Australia