1. Department of Psychology and Sociology of Health and Public Health, School of Public Health, University of Warmia and Mazury in Olsztyn, Warszawska 30, 10-082 Olsztyn, Poland
2. Department of Radiotherapy, NU-MED Radiotherapy Center in Elblag, Królewiecka 146, 82-300 Elblag, Poland
3. Department of Oncology, The Center for Pulmonary Diseases in Olsztyn, Jagiellońska 78, 10-357 Olsztyn, Poland
4. Department of Nursing, Faculty of Medicine and Health Sciences, University of Zielona Gora, ul. Zyty 28, 65-046 Zielona Gora, Poland
5. Department of Surgery and Oncology, Faculty of Medicine and Health Sciences, University of Zielona Gora, Zyty 28, 65-046 Zielona Gora, Poland
6. Department of Oncology, Collegium Medicum University of Warmia and Mazury in Olsztyn, Wojska Polskiego 37, 10-228 Olsztyn, Poland