Marcin Kurzyna MD, PhD, Professor Head of the Department of Pulmonary Circulation, Thromboembolic Disease and Cardiology; Postgraduate Medical Center, Otwock, Poland from 2020; Professor of Postgraduate Medical Center, Warsaw Poland; Specialist in cardiology; Specialist in internal medicine; Member of Polish Cardiac Society, Member of European Cardiac Society; Research of interests: pulmonary arterial hypertension, chronic thromboembolic pulmonary hypertension, balloon pulmonary angioplasty, acute pulmonary embolism, venous thromboembolism