1. Eugenie Younger, MD, Sarcoma Unit, Royal Marsden NHS Foundation Trust, London, United Kingdom; Olga Husson, PhD, Division of Clinical Studies, Institute of Cancer Research, London, United Kingdom; Department of Medical Oncology, Netherlands Cancer Institute, Amsterdam, the Netherlands, and Winette T. A. van der Graaf, MD, PhD; Department of Medical Oncology, Netherlands Cancer Institute, Amsterdam, the Netherlands