1. Department of Surgery; Sana Klinikum Lichtenberg Berlin; Berlin Germany
2. Department of General; Vascular and Thoracic Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin; Berlin Germany
3. German Society for General and Visceral Surgery; Haus Der Bundespressekonferenz; Berlin Germany
4. The B Scientific Group (B SG); Vienna Austria