1. Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Department of Rheumatology, Clinical Immunology, Osteology and Physical Medicine, Kerckhoff-Klinik, Bad Nauheim, Germany
2. Department of Cardiology, Kerckhoff-Klinik, Bad Nauheim, Germany
3. Division of Endocrinology and Nuclear Medicine, Department of Internal Medicine, Medical University of Graz, Graz, Austria
4. Division of Endocrinology, Diabetes and Metabolic Bone Disease, Department of Internal Medicine, University of Dresden, Dresden, Germany
5. Department of Clinical Chemistry and Laboratory Medicine, University of Dresden, Dresden, Germany
6. Department of Hemostasiology and Transfusion Medicine, Kerckhoff-Klinik, Bad Nauheim, Germany