Clinically: Surgical training with Professors K.Schwemmle (Giessen) and H.G.Beger (Ulm); APL Professor of Surgery at Univ.Ulm since 2001; Head of Dept.Surgery, of DKG large bowel organ center and DGAV center of expertise for the treatment of malignant peritoneal disease at APK Wiesbaden (1/2002-1/2018). Formation and head of the national research group FOGT. Improvement of 5-y-overall survival rate in colon cancer UICC III from 48% to 72%. Inaugural significant improvements in curative treatment of advanced metastatic disease. Fundamental analysis of factors determining quality in GI-cancer surgery. Leading positions at Ulm University and Asklepios Paulinen Hospital Wiesbaden. Foundation and Head Med.Board Surgery Asklepios 2002-2012. Member Boards of Trustees Asklepios Company; Head Arbitration Board Asklepios Company. Advisor to executive officers Asklepios. Chief Medical Officer Broermann Research GmbH. Scientfically: DFG funded postdoctoral training with Prof.Charles Heidelberger and J.Landolph at USC Kenneth Norris Cancer Center 1980-82; DFG funded translational research projects, honoreded with Schouder Award Lecture, Sackler School of Medicine, Tel Aviv University 2001, and Oscar Schubert Award and Lecture, Swedish Society of Medicine, Stockholm 2004; in vitro phase II trial and protocol development for regional chemotherapeutic procedures; first paper on treatment individualization of chemotherapy in nonresectable liver tumors/metastases using cell culture and molecular biology, awarded as “best paper of the year” in the journal “Cancer” (December 2000).