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