1. Department of Surgery , University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU) , Erlangen , Germany
2. Department of Internal Medicine I , University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU) , Erlangen , Germany
3. Department of General, Visceral, Vascular and Graft Surgery , University Hospital Magdeburg, Otto-von-Guericke University of Magdeburg , Magdeburg , Germany
4. Department of Vascular Surgery , University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU) , Erlangen , Germany