Department of Gastrointestinal Surgery, Østfold Hospital Trust, Grålum, Norway, Institute for Clinical Medicine, University of Oslo, Oslo, Norway

Department of Gastrointestinal Surgery, Østfold Hospital Trust, Grålum, Norway, Institute for Clinical Medicine, University of Oslo, Oslo, Norway, Interventional Centre, Oslo University Hospital-Rikshospitalet, Oslo, Norway, Department of Surgery, Fonna Hospital Trust, Odda, Norway, Department of Faculty Surgery N 2, I.M. Sechenov First Moscow State Medical University, Moscow, Russia, Department of Surgery N 2, Yerevan State Medical University After M. Heratsi, Yerevan, Armenia

Anatomy Sector, Teaching Unit, Faculty of Medicine, University of Geneva, Geneva, Switzerland

Institute for Clinical Medicine, University of Oslo, Oslo, Norway, Department of Digestive Surgery, Akershus University Hospital, Lørenskog, Norway

Funding/Support: None reported.

Financial Disclosure: None reported.