1. Chair of Palliative Care, Nicolas Copernicus University, Collegium Medicum in Bydgoszcz, Poland.
2. Department of Aerosology and Aerosol Bioengineering, Research and Development Centre of MEDiNET, Krakow, Poland.
3. Dove House Hospice, Hull, United Kingdom.
4. Department of Allergology, Chair of Lung Disease, University of Medical Science of Gdansk, Poland.