1. Department of Medical Oncology, Leiden University Medical Centre, Leiden, the Netherlands;
2. Sarcoma Unit, The Royal Marsden NHS Foundation Trust, London, UK;
3. Unit of Bone and Soft Tissue Oncology, Tel-Aviv Sourasky Medical Center and Tel-Aviv University Sackler School of Medicine, Tel-Aviv, Israel;
4. Divisione Oncologia Medica, Candiolo Cancer Institute – FPO I.R.C.C.S., Candiolo, Italy;
5. Hadassah-Hebrew University Medical Center, Jerusalem, Israel;
6. United BioSource (Germany) GmbH, Loerrach, Germany;
7. United BioSource Corporation, Quebec, Canada;
8. bluebird bio, London, UK;
9. Bristol-Myers Squibb, Uxbridge, UK;
10. Novartis Oncology, East Hanover, NJ, USA;
11. Adult Mesenchymal Tumor Medical Oncology Unit, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy