Prof. Dr. Matthias Thielmann is a Professor of Cardiac Surgery, and the Head of Coronary Surgery at the Department of Thoracic and Cardiovascular Surgery, West-German Heart and Vascular Center Essen, University Duisburg-Essen. He is Secretary General and Executive Committee Member of the European Society for Cardiovascular and Endovascular Surgery (ESCVS), and Secretary of the European Society for Cardiology (ESC) Working Group Nucleus for Cardiovascular Surgery. He is a member of the National Guideline Committee for chronic CAD and a member of the EACTS Guideline Committee. He is also a member of the Essen Ethics Commission of the Faculty of Medicine, University Duisburg-Essen. His clinical interests include acute coronary syndromes, cardiac biomarker research, ischemia/reperfusion injury research, cardio-protection, coronary artery bypass grafting, minimally invasive valve surgery, aortic valve surgery, mitral and tricuspid valve repair, transcatheter and endovascular techniques, outcome research, and beating heart surgery.