Affiliation: | (1) St. Marks Hospital, London, UK;(2) Department of General Surgery, University Hospital Erlangen, Erlangen, Germany;(3) Medtronic Europe Sarl, Tolochenaz, Switzerland;(4) Department of Surgery, Herlev Hospital, Herlev, Denmark;(5) Department of General Surgery, Danube Hospital/ SMZ-Ost, Vienna, Austria |