1. Department of Surgery; Ukmerge Hospital; Ukmerge Lithuania
2. Department of Surgery; Klaipeda University Hospital; Klaipeda Lithuania
3. Department of General and Abdominal Surgery and Oncology, Faculty of Medicine; Clinic of Internal, Family Medicine and Oncology, National Cancer Institute; Vilnius Lithuania
4. Department of General and Abdominal Surgery and Oncology; National Cancer Institute; Vilnius Lithuania
5. Faculty of Health Care; University of Applied Sciences; Vilnius Lithuania
6. Department of Surgery, Hospital of Oncology; Hospital of Lithuanian University of Health Sciences Kaunas Clinics; Kaunas Lithuania
7. General Surgery Department; Aintree University Hospital NHS Foundation Trust, University of Liverpool; Liverpool UK
8. National Center of Pathology, Affiliate of Vilnius University Hospital Santaros Klinikos; Vilnius Lithuania
9. Faculty of Medicine; Vilnius University; Vilnius Lithuania