[1] Oslo University Hospital,The Intervention Center
[2] Pikshospitalet,Department of Surgery N1
[3] Yerevan State Medical University After M. Heratsi,Department of Research & Development, Division of Emergencies and Critical Care
[4] Oslo University Hospital ,Department of HPB Surgery
[5] Oslo University Hospital,Department of Gastrointestinal Surgery
[6] Pikshospitalet,Department of Faculty Surgery N2
[7] Østfold Hospital Trust,Institute of Clinical Medicine, Medical Faculty
[8] I.M. Sechenov First Moscow State Medical University,undefined
[9] University of Oslo,undefined