1 Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56124 Pisa, Italy.
2 Pancreatic Surgery Unit, Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Center for Digestive Diseases, Karolinska University Hospital, K53, 14186 Stockholm, Sweden.
3 Department of Gastroenterology and Hepatology, Erasmus University Medical Center's, Gravendijkwal 230, P.O. Box 2040, 3000 CA Rotterdam, Netherlands.
4 Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital, Teiskontie 35, P.O. Box 2000, 33521 Tampere, Finland.