University of Cologne, Medical University of Vienna, Medical University of Graz, Medical University of Vienna, Medical University of Vienna, Medical University of Vienna, University of Cologne, Hannover Medical School, KRH Klinikum Mitte, Ordensklinikum Linz Hospital Elisabethinen, RWTH Aachen University, Charité - Universitätsmedizin Berlin, Charité - Universitätsmedizin Berlin, University of Cologne, University of Cologne, Vivantes Klinikum im Friedrichshain, University of Witten/Herdecke, University of Duisburg-Essen, University of Duisburg-Essen, Center for Translational Medicineand Immune Diagnostics Laboratory, Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, Center for Translational Medicineand Immune Diagnostics Laboratory, Medical Department I, Marien Hospital Herne, University Hospital of the Ruhr-University Bochum, University of Stuttgart, University of Cologne - Department of Internal Medicine, University of Cologne and University of Cologne