Risk and protective factors for anastomotic insufficiency in elective colon and rectal cancer resections - a multivariate analysis with over 700 patients. - Lange UG; Mehdorn M; Keller G; Willing A; Nitzsche H; Wagner LC; Gockel I; Jansen-Winkeln B; Mees ST; Stelzner S (Langenbeck's archives of surgery, 2026)