1. Department of Internal Medicine B, Cardiology, Pneumology, Weaning, Infectious Diseases, Intensive Care Medicine, University Medicine Greifswald, Germany
2. Institute for Community Medicine, SHIP/Clinical-Epidemiological Research, University Medicine Greifswald, Germany
3. Department of Internal Medicine A, University Medicine Greifswald, Germany
4. Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Germany
5. Medical Practice, Erfurt, Germany