1. From the Department of Internal Medicine III, Martin-Luther-University, Halle/Wittenberg, University Hospital, Halle/Salle (S.G.); Department of Internal Medicine/Cardiology, University of Leipzig-Heart Center, Leipzig (M.S., I.K., S.E., N.M., K.L., G.S., V.A.); Institute for Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University Hospital, University of Leipzig, Leipzig (J.K., D.T., J.T.); Klinikum Links der Weser, Klinik für Kardiologie, Bremen (R.H.), Germany.