1. Department of Cardiovascular Surgery, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany.
2. Research Group for Experimental Surgery, Department of Cardiovascular Surgery, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany.
3. Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain.
4. Center for Research in NanoEngineering (CRNE), Technical University of Catalonia (UPC), Barcelona, Spain.