[1] Valle Hebron Univ Hosp, Barcelona, Spain
[2] NN Petrov Oncol Res Inst, St Petersburg, Russia
[3] St Petersburg City Oncol Hosp, St Petersburg, Russia
[4] Frauenklin Roten Kreuz, Munich, Germany
[5] Hosp Clin Univ Valencia, Valencia, Spain
[6] Russian Acad Med Sci, NN Blokhin Russian Canc Res Ctr, Moscow, Russia
[7] F Hoffmann La Roche, Basel, Switzerland
[8] Fdn IRRCS, Ist Nazl Tumori, Milan, Italy