1) Medical University of Silesia in Katowice Faculty of Medicine, ul. Poniatowskiego 15, 40-055 Katowice, Poland

2) Provincial Specialist Hospital in Wrocław, Research and Development Center, ul. H. Kamieńskiego 73a, 51-124 Wrocław

3) St. Barbara's Provincial Specialist Hospital in Sosnowiec, Plac Medyków 1 St., 41-214 Sosnowiec, Poland

4) University Clinical Hospital in Wroclaw, Borowska 213 Street, 50-556 Wrocław, Poland

5) Henryk Klimontowicz Specialist Hospital in Gorlice, Węgierska 21 Street, 38-300 Gorlice

6) Municipal Multispecialist Hospital with a Long-Term Care Facility, Independent Public Health Care Institution (SPZOZ), Poznań Poland

7) Medical University of Bialystok, 1 Jana Kilińskiego Street, 15-089 Białystok, Poland

8) Mazovian Dental Center Ltd., 1 Nowy Zjazd Street, 00-301 Warsaw, Poland.

9) Silesian University of Technology Faculty of Mechanical Engineering, ul. Konarskiego 18A, 44-100 Gliwice, Poland