Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA; Prevoljskiy Reg Med Ctr, Novgorod, Russia; Fudan Univ, Canc Hosp, Shanghai 200433, Peoples R China; Leningrad Reg Oncol Dispensary, St Petersburg, Russia; Beijing Union Med Coll Hosp, Beijing, Peoples R China; Hertzen Canc Res Inst, Moscow, Russia; Zhejiang Univ, Affiliated Hosp 1, Hangzhou 310003, Zhejiang, Peoples R China; Specialized Hosp Act Treatment Oncol, Sofia, Bulgaria; Ctr Invest Clin Clin Viedma SA, Viedma, Argentina; Ctr Pesquisas Oncol CEPON, Florianopolis, SC, Brazil; East Jefferson Gen Hosp, Crescent City Res Consortium, Metairie, LA USA; Novartis Pharmaceut, E Hanover, NJ USA; Novartis Pharma SAS, Rueil Malmaison, France; Novartis Pharmaceut, E Hanover, NJ USA; Chinese Acad Med Sci, Canc Inst & Hosp, Beijing 100730, Peoples R China