1 Department of Cardiology, Gaia/Espinho Hospital Centre, Vila Nova de Gaia, Portugal; Department of Physiology and Cardiothoracic Surgery, Faculty of Medicine of University of Porto, Porto, Portugal. Electronic address: ricardoladeiraslopes@gmail.com.
2 Deutsches Herzzentrum München, Technische Universität München, DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Munich, Germany.