1. UHE Satelite Campus in Warsaw, University of Humanities and Economics in Lodz, Warsaw, Poland
2. Medical University of Łódź, Łódź, Poland
3. Centre of Postgraduate Medical Education, Warsaw, Poland
4. Department of Vascular Surgery and Angiology, Nicolaus Copernicus University Collegium Medicum in Bydgoszcz, Bydgoszcz, Poland
5. Department of Diabetology, Institute of Rural Medicine in Lublin, Lublin, Poland