1. St. Hedvig Clinical Provincial Hospital, 35-301 Brzozów, Poland
2. Institute of Health Sciences, College of Medical Sciences, University of Rzeszów, 35-959 Brzozów, Poland
3. Institute of Health Protection, State University of Applied Sciences in Przemyśl, 37-700 Przemyśl, Poland
4. Center for Postgraduate Education of Nurses and Midwives, 35-083 Brzozów, Poland
5. Podkarpackie Specialist Oncology Centre, Specialist Hospital in Brzozów, 36-200 Brzozów, Poland