1 From the First Cardiology Clinic, Medical School, National and Kapodistrian University of Athens, Hippokration Hospital, Greece (C. Tsioufis) ktsioufis@hippocratio.gr.
2 Department of Cardiology, Helena Venizelou Hospital, Athens, Greece (C. Thomopoulos).
3 and Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institut für Klinische Pharmakologie und Toxikologie, Germany (R.K.).