University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, University of Würzburg, Tagesklinik Landshut, University of Duisburg-Essen - University Hospital Essen, University Hospital Ulm, Mannheimer Onkologie Praxis, University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, University of Cologne - Department I of Internal Medicine, Schleswig-Holstein University - University Hospital Center, Schleswig-Holstein University - University Hospital Center, Schleswig-Holstein University - University Hospital Center, University of Cologne - Department I of Internal Medicine, University Hospital Ulm, University of Cologne - Department I of Internal Medicine and University of Cologne - Department I of Internal Medicine

German Cancer Research Center (DKFZ), University Hospital Ulm, German Cancer Research Center (DKFZ), German Cancer Research Center (DKFZ), University of Zurich, University Hospital Ulm, University Hospital Ulm, University Hospital Ulm, University Hospital Ulm, German Cancer Research Center (DKFZ) and University Hospital Ulm