RWTH Aachen University, Vandage GmbH, University of Münster, Municipal Hospital Braunschweig, Hannover Medical School, University Clinic Frankfurt, Vandage GmbH, Vandage GmbH, BARMER, GlaxoSmithKline - Munich, GlaxoSmithKline - Munich, GlaxoSmithKline - Munich, Charité - Universitätsmedizin Berlin, University of Heidelberg, University of Kiel, RWTH Aachen University, University of Wuerzburg - University Hospital of Wuerzburg, University of Hamburg - University Medical Center Hamburg-Eppendorf, Immanuel Krankenhaus Berlin and Charité - Universitätsmedizin Berlin