1 Department of Medical Oncology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Marchioninistrasse 15, 81377 Munich, Germany; Comprehensive Cancer Center, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Marchioninistrasse 15, 81377 Munich, Germany. Electronic address: Julian.Holch@med.uni-muenchen.de.
2 Department of Medical Oncology, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Marchioninistrasse 15, 81377 Munich, Germany; Comprehensive Cancer Center, University Hospital Grosshadern, Ludwig-Maximilians-University Munich, Marchioninistrasse 15, 81377 Munich, Germany.