1. Department of Gastroenterologic Surgery; Helsinki University Hospital; Helsinki; Finland
2. Department of Pathology; Haartman Institute; University of Helsinki and HUSLAB; Helsinki University Central Hospital; Finland
3. Department of Radiology; Helsinki University Central Hospital; Helsinki; Finland
4. Division of Transplantation and Liver Surgery; Helsinki University Central Hospital; Helsinki; Finland
5. Helsinki University and Clinic of Gastroenterology; Helsinki University Central Hospital; Helsinki; Finland