1. Institute for Community Medicine, Ernst Moritz Arndt University Greifswald, Greifswald, Germany.
2. Institute of Clinical Chemistry and Laboratory Medicine, Ernst Moritz Arndt University Greifswald, Greifswald, Germany.
3. Department of Cardiology, Ernst Moritz Arndt University Greifswald, Greifswald, Germany.
4. Department of Medicine A, Ernst Moritz Arndt University Greifswald, Greifswald, Germany.
5. Institute of Pharmacology, Ernst Moritz Arndt University Greifswald, Greifswald, Germany.