1. (INSTITUTES PARTICIPATING IN THE TRIAL: Cancer Research Centre of the U.S.S.R. Academy of Medical Sciences, Moscow, U.S.S.R.; Fondazione Pascale, Naples, Italy; Herzen State Oncological Institute, Moscow, U.S.S.R.; Het Nederlands Kankerinstituut, Amsterdam, The Nederlands; Hospital A.C. Camargo, Sao Paolo, Brazil; Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru; Institut Gustave Roussy, Villejuif, France; Institut Jules Bordet, Brussels, Belgium; lstituto Nazionale Tumori, Milano, Italy;...