1. Department of Epidemiology and Social Medicine, Ernst Moritz Arndt University Greifswald, Germany
2. Department of Clinical Chemistry, Ernst Moritz Arndt University Greifswald, Germany
3. Medical Department, Ernst Moritz Arndt University Greifswald, Germany
4. Department of Biostatistics, Ernst Moritz Arndt University Greifswald, Germany
5. Department of Hygiene and Environmental Medicine, Ernst Moritz Arndt University Greifswald, Germany