1 Departments of Cardiology and Cardiac Surgery, Kerckhoff Heart Center, and the German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Bad Nauheim, Germany; Department of Cardiology, Justus-Liebig University of Giessen, Giessen, Germany. Electronic address: w.kim@kerckhoff-klinik.de.
2 Department of Cardiology, St. Johannes Hospital, Dortmund, Germany.