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Departments of *Surgery and †Internal Medicine IV, Heidelberg University Hospital,
Heidelberg, Germany ‡Department of Surgery, Katharinen Hospital, Stuttgart, Germany;
§Department of Surgery, St. Marien Hospital Muelheim, Muelheim ¶Department of Surgery,
Bietigheim Hospital, Bietigheim-Bissingen, Germany ‖Department of Surgery, Ketteler
Hospital, Offenbach, Germany; Departments of **Surgery I and ††Internal Medicine II,
Diakonie Hospital, Schwaebisch Hall, Germany ‡‡Department of Surgery, Rostock University
Hospital, Germany §§Department of Internal Medicine, Katharinen Hospital, Stuttgart,
Germany; Departments of ¶¶Surgery and ‖‖Gastroenterology, Magdeburg Hospital, Magdeburg,
Germany ***Department of Surgery, Bad Cannstatt Hospital, Stuttgart, Germany †††Karlsruhe
Hospital, Karlsruhe, Germany; Department of ‡‡‡Internal Medicine, Salem Hospital,
Heidelberg, Germany §§§Research and Public Relations, Burscheid, Germany ¶¶¶Department
of Surgery, Salem Hospital, Heidelberg, Germany.