1. Department of Oncology Propaedeutics, Medical University of Warsaw, 01-445 Warsaw, Poland
2. Department of General Surgery and Clinical Nutrition, Centre for Postgraduate Medical Education, 01-813 Warsaw, Poland
3. Faculty of Health Sciences, Calisia University, 62-800 Kalisz, Poland
4. Medical Institute, Jan Grodek State University, 38-500 Sanok, Poland
5. Center for Competence Development, Integrated Care and e-Health, Medical University of Gdansk, 80-204 Gdansk, Poland
6. Department of Health Economics and Medical Law, Medical University of Warsaw, 01-445 Warsaw, Poland
7. Department of Economic and System Analyses, National Institute of Public Health NIH-National Research Institute, 00-791 Warsaw, Poland