1. Department of Cardiac Surgery; Heart and Marfan Center, University of Heidelberg; Heidelberg Germany
2. Department of Cardiothoracic Transplantation & Mechanical Circulatory Support; Royal Brompton and Harefield NHS Foundation Trust; Middlesex UK
3. Heart and Vascular Center; Semmelweis University; Budapest Hungary
4. 2nd Department of Pathology; Semmelweis University; Budapest Hungary