Affiliation: | 1. Department of Medical Oncology, Leiden University Medical Centre, Leiden, The Netherlands;2. Department of Sarcoma Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA;3. Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute – Oncology Center, Warsaw, Poland;4. Department of Medical Oncology, Radboud University Medical Centre, Nijmegen, The Netherlands;5. Department of Pathology, Leiden University Medical Centre, Leiden, The Netherlands |