1. Department of Nursing and Obstetrics, Faculty of Health Sciences, Wroclaw Medical University, 51-618 Wroclaw, Poland
2. Department of Health Care Services, Polish National Health Fund, Central Office in Warsaw, 02-528 Warsaw, Poland
3. Department of Basic Sciences, Faculty of Health Sciences, Wroclaw Medical University, 50-367 Wroclaw, Poland
4. Department of Emergency Medical Service, Faculty of Health Sciences, Wroclaw Medical University, 51-616 Wroclaw, Poland
5. Institute of Heart Diseases, University Hospital, 50-566 Wroclaw, Poland
6. Group of Research in Care (GRUPAC), Faculty of Health Science, University of La Rioja, 26006 Logrono, Spain
7. University Hospital, 50-566 Wroclaw, Poland