1. Chair and Department of Palliative Medicine, Poznan University of Medical Sciences, Poznan, Poland
2. Department of Quality of Life Research, Gdansk Medical University, Gdansk, Poland
3. Home Hospice for Adults and Children, Poznan, Poland
4. Department of Psychiatry, Gdansk Medical University, Gdansk, Poland
5. Palliative Care Nursing Department, Wroclaw University of Medical Sciences, Wroclaw, Poland