1. Danylo Halytsky Lviv National Medical University Lviv Ukraine
2. Medical University of Lublin Lublin Poland
3. Lviv State Oncological Regional Treatment and Diagnostic Center Lviv Ukraine
4. Odessa National Medical University Odessa Ukraine
5. Medical University of Gdańsk Gdańsk Poland
6. National Cancer Institute Kyiv Ukraine
7. Vilnius universtiy hospital Santaros klinikos Vilnius Lithuania