1. Center for Evidence-based Healthcare; University Hospital and Medical Faculty Carl Gustav Carus; TU Dresden; Dresden Germany
2. National Center for Tumor Diseases (NCT) (partner site) Dresden and German Cancer Research Center (DKFZ); Dresden Germany
3. Department of Medical Biostatistics, Epidemiology and Informatics; University of Mainz; Mainz Germany
4. University Cancer Center; University Hospital and Medical Faculty Carl Gustav Carus; TU Dresden; Dresden Germany