1. Medical Oncology Department, Hospital de la Santa Creu i Sant Pau and Universitat Autònoma de Barcelona, Barcelona, Spain
2. Medical Oncology Department and Translational Research Unit, Albacete University Hospital, Albacete, Spain
3. Sector of Medical Oncology, Institute of Oncology Ljubljana and University of Ljubljana, Ljubljana, Slovenia
4. Medical Oncology Department, Kantonsspital St Gallen, St Gallen, Switzerland
5. Division of Medical Oncology & Hematology, Department of Medicine, Princess Margaret Cancer Centre and the University of Toronto, Toronto, Ontario, Canada