Crescent City Res Consortium, Marrero, LA USA; Chinese Acad Med Sci, Canc Hosp & Inst, Peking Union Med Coll, Beijing 100730, Peoples R China; Prevoljskiy Reg Med Ctr, Novgorod, Russia; Fudan Univ, Shanghai Canc Ctr, Shanghai 200433, Peoples R China; Leningrad Reg Oncol Dispensary, St Petersburg, Russia; Beijing Union Med Coll Hosp, Beijing, Peoples R China; Natl Med Res Radiol Ctr, Moscow, Russia; Zhejiang Univ, Sch Med, Affiliated Hosp 1, Hangzhou 310003, Zhejiang, Peoples R China; Med Radiol Res Ctr, Obninsk, Russia; Ctr Pesquisas Oncol CEPON, Florianopolis, SC, Brazil; Novartis Oncol, E Hanover, NJ USA; Novartis Pharma SAS, Rueil Malmaison, France; Mem Sloan Kettering Canc Ctr, 1275 York Ave, New York, NY 10021 USA; Ctr Invest Clin Clin Viedma, Viedma, Argentina