Department of General Surgery, University of Heidelberg, Heidelberg, Germany. Competing Interests Declared: None. *Correspondence address: Markus W Büchler, MD, Department of General Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120 Heidelberg, Germany. email: [email protected] Submitted June 12, 2007; accepted June 13, 2007.
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