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

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

3) Medical University of Silesia in Katowice Poniatowskiego 15 St., 40-055 Katowice, Poland

4) University Clinical Hospital named after Jan Mikulicz-Radecki in Wrocław Borowska 213 St., 50-556 Wrocław, Poland

5) University Clinical Hospital in Wrocław Borowska 213 St., 50-556 Wrocław, Poland

6) Specialist Hospital named after Henryk Klimontowicz in Gorlice Węgierska 21 St., 38-300 Gorlice, Poland

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

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

9) Beskid Oncology Center, City Hospital of John Paul II in Bielsko-Biała, 21 Stanisława Wyspiańskiego Street, 43-300 Bielsko-Biała, Poland