Affiliation: | 1. Department of Surgery, Malm? University Hospital, Lund University, 205 02, Malm?, Sweden 2. Department of General, Visceral, Vascular, and Pediatric Surgery, University of Saarland, Homburg/Saar, Germany 3. Institute for Clinical and Experimental Surgery, University of Saarland, Homburg/Saar, Germany
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