1. Chair of Surgery, Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski Krakow University, Poland, Department of Oncological Surgery, 5th Military Clinical Hospital in Krakow, Poland
2. Department of General Surgery and Surgical Oncology, Ludwik Rydygier Memorial Hospital in Krakow, Poland
3. Department of Medical Education, Jagiellonian University Medical College, Krakow, Poland, Malopolska Burn and Plastic Centre, Ludwik Rydygier's Specialist Hospital in Krakow, Poland
4. Colorectal Cancer Unit, Maria Skłodowska-Curie Białystok Oncology Center, Poland
5. 2nd Department of General Surgery, Jagiellonian University Medical College, Krakow, Poland
6. Oncological Surgery Department with a Sub-department of Breast Diseases, Tadeusz Koszarowski Oncology Centre in Opole, Poland, Institute of Medical Sciences, Faculty of Medicine, University of Opole, Poland
7. Chair of Surgical Oncology, Ludwik Rydygier's Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Torun, Poland, Department of Surgical Oncology, Oncology Center – Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
8. Department of Surgical Oncology, Oncology Center – Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
9. Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski Krakow University, Poland
10. Chair of Surgery, Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski Krakow University, Poland, Department of Oncological Surgery, 5th Military Clinical Hospital in Krakow, Poland, National Institute of Oncology, Maria Skłodowska-Curie Memorial, Warsaw, Poland