1 Department of Internal Medicine I (Cardiology, Angiology and Intensive Medical Care), University Hospital Jena, Friedrich-Schiller-University Jena, Jena, Germany. christian.schulze@med.uni-jena.de.
2 Department of Internal Medicine I (Cardiology, Angiology and Intensive Medical Care), University Hospital Jena, Friedrich-Schiller-University Jena, Jena, Germany.