1. Department of Radiotherapy I, M. Skłodowska-Curie National Research Institute of Oncology, Warsaw, Poland
2. Department of Gastroenterological Oncology, M. Skłodowska-Curie National Research Institute of Oncology, Warsaw, Poland
3. Department of Radiology, M. Skłodowska-Curie National Research Institute of Oncology, Warsaw, Poland
4. Chair of Surgical Oncology, Collegium Medicum Nicolaus Copernicus University, Oncology Center—Prof Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
5. Department of Radiotherapy, Collegium Medicum Nicolaus Copernicus University Oncology Center—Prof Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
6. Ist Department of General Surgery, Jagiellonian Medical University College, Kraków, Poland
7. Department of Radiotherapy, University Children’s Hospital, Kraków, Poland
8. Department of Oncology, Wroclaw Medical University, Wrocław, Poland
9. Department of Radiotherapy, Wrocław Comprehensive Cancer Centre, Wrocław, Poland
10. Department of Surgery, Lower Silesian Oncological Centre, Wrocław, Poland
11. Department of Radiotherapy, Nu-Med Group, Zamość, Poland
12. Department of Radiotherapy, St. John’s Cancer Center, Lublin, Poland
13. Bioinformatics and Biostatistics Unit, M. Skłodowska-Curie National Research Institute of Oncology, Warsaw, Poland
14. Department of Radiotherapy, Military Institute of Medicine, Warsaw, Poland
15. Department of Radiotherapy, Regional Oncology Center, Czestochowa, Poland
16. Department of Gynecological Oncology, M. Skłodowska-Curie National Research Institute of Oncology, Warsaw, Poland