1. Medical Department III, Hospital Großhadern, Ludwig-Maximilians-University, 81377 Munich, Germany
2. Department of Pulmonary Rehabilitation, German Center for Lung Research (DZL), Phillipps-University of Marburg, 35043 Marburg, Germany
3. Department of Hematology and Oncology, University Hospital of Augsburg, 86156 Augsburg, Germany
4. Department of Hematology and Oncology, Diaconia Hospital Stuttgart, 70176 Stuttgart, Germany