Stavros V Konstantinides1, Adam Torbicki2. 1. Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany Dept of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece stavros.konstantinides@unimedizin-mainz.de. 2. Dept of Pulmonary Circulation and Thromboembolic Diseases, Center of Postgraduate Medical Education, ECZ-Otwock, Otwock, Poland.