1. Institute of General Practice and Family Medicine, Medical Faculty of
Martin-Luther-University Halle-Wittenberg, Halle, Germany
2. Department of General Practice, Medical Faculty, University of Leipzig,
Leipzig, Germany
3. KfH Kuratorium für Dialyse und Nierentransplantation e.V.,
Neu-Isenburg, Germany
4. Department of Internal Medicine, Neurology, Dermatology, Clinic for
Endocrinology, Diabetology and Nephrology, University of Leipzig, Leipzig,
Germany