Memorial Sloan-Kettering Cancer Center, New York, NY, USA. Electronic address: motzerr@mskcc.org. Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Matteo University Hospital Foundation, Pavia, Italy. Comprehensive Cancer Centers of Nevada, Las Vegas, NV, USA. San Camillo and Forlanini Hospitals, Rome, Italy. Military Institute of Health Services in Warsaw, Warsaw, Poland. Maria Sklodowska-Curie Institute, Warsaw, Poland. BC Cancer Agency Vancouver Cancer Centre, Vancouver, BC, Canada. Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, South Korea. Sunnybrook Odette Cancer Centre, Toronto, ON, Canada. Palacký University Medical School and Teaching Hospital, Olomouc, Czech Republic. IRCCS Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, Meldola, Italy. Hanover Medical School, Hanover, Germany. Monash University Eastern Health Clinical School, Melbourne, VIC, Australia. Asan Medical Center, Seoul, South Korea. Hospital Universitario Central de Asturias, Oviedo, Asturias, Spain. Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA. Novartis Pharma, Basel, Switzerland. Institut Gustave Roussy, Villejuif, France.