[1] Dana Farber Canc Inst, Boston, MA 02115 USA
[2] Sheba Med Ctr, Ramat Gan, Israel
[3] Yale Univ, Sch Med, New Haven, CT USA
[4] St Petersburg City Oncol Hosp, St Petersburg, Russia
[5] NCI Naples, Naples, Italy
[6] Univ Hosp Leuven, Leuven, Belgium
[7] Fdn IRCCS Ist Nazl Tumori, Milan, Italy
[8] Netherlands Canc Inst, Amsterdam, Netherlands
[9] BOOG Study Ctr, Amsterdam, Netherlands
[10] Univ Alabama Birmingham, Birmingham, AL USA
[11] Ctr Hosp Univ Montreal CHUM, Montreal, PQ, Canada
[12] Charite Med Univ Berlin, Berlin, Germany
[13] Univ Milano Bicocca, Milan, Italy
[14] European Inst Oncol, Milan, Italy
[15] Clin Univ Navarra, MD Anderson Int Espana, Madrid, Spain
[16] Vall Hebron Inst Oncol VHIO, Barcelona, Spain
[17] Radboud Univ Nijmegen, Med Ctr, Nijmegen, Netherlands
[18] Vilnius Univ, Inst Clin Med, Vilnius, Lithuania
[19] Merck Co Inc, Kenilworth, NJ USA
[20] UCL, Canc Inst, London, England