1. Department of Medical Oncology; Klinikum Grosshadern and Comprehensive Cancer Center; Ludwig-Maximilians-University of Munich; Munich; Germany
2. Klinikum Sankt Marien; Onkologisches Zentrum; Amberg; Germany
3. Institute of Medical Informatics, Biometry, and Epidemiology (IBE); Faculty of Medicine; Ludwig-Maximilians-University Munich; Munich; Germany