1. Department of General Surgery and Clinical Nutrition, Postgraduate Medical Education Center, Warsaw, Poland; Head: Jacek Sobocki MD PhD, CMPK Professor
2. Department of General Surgery, Gastrointestinal Surgery and Surgical Oncology, Collegium Mediucm at the Nicolaus Copernicus University in Torun, Poland; Head: prof. Marek Jackowski MD PhD
3. Department of General and Colorectal Surgery, Medical University of Lodz, Poland; Head: prof. Adam Dziki MD PhD
4. Department of General Surgery, Gastrointestinal Surgery and Surgical Oncology, Postgraduate Medical Education Center, Warsaw, Poland; Head: prof. Wiesław Tarnowski MD PhD
5. Department of General Surgery, Endocrine Surgery and Gastrointestinal Oncology, Institute of Surgery, Poznan University of Medical Sciences, Poland; Head: prof. Tomasz Banasiewicz MD PhD
6. General and Vascular Surgery Unit, Center for Nutritional Therapy, M. Pirogow Regional Specialist Hospital, Lodz, Poland; Head: Marek Kunecki MD PhD
7. Department of General Surgery, Gastrointestinal Surgery and Surgical Oncology, Medical University of Warsaw, Poland; Head: Maciej Słodkowski MD PhD
8. Department and Clinical Unit of General Surgery, Gastrointestinal Surgery and Transplantology, Jagiellonian University Medical College, Cracow, Poland; Head: prof. Piotr Richter MD PhD
9. II Department of Surgery, Clinical Unit of General Surgery, Surgical Oncology, Metabolic Surgery and Emergency Surgery, Jagiellonian University Medical College, Cracow, Poland; Head: prof. Andrzej Matyja, MD PhD
10. II Department and Clinic of General Surgery, Vascular Surgery and Surgical Oncology at the Medical University of Warsaw, Poland; Head: prof. Mariusz Frączek MD PhD
11. II Department and Clinic of General Surgery, Gastrointestinal Surgery and Gastrointestinal Neoplasia, Medical University of Lublin, Poland; Head: prof. Grzegorz Wallner MD PhD