[1] Natl Canc Ctr Hosp East, Kashiwa, Chiba, Japan
[2] Seoul Natl Univ, Grad Sch, Coll Med, Seoul, South Korea
[3] Maria Sklodowska Curie Natl Canc Res Inst, Warsaw, Poland
[4] Yonsei Univ, Coll Med, Seoul, South Korea
[5] Kanagawa Canc Ctr, Yokohama, Kanagawa, Japan
[6] Fdn IRCCS Ist Nazl Tumori, Milan, Italy
[7] Chonnam Natl Univ, Med Sch, Hwasun, South Korea
[8] IRCCS, Veneto Inst Oncol IOV, Padua, Italy
[9] Univ La Frontera, James Lind Canc Res Ctr, Temuco, Chile
[10] Natl Cheng Kung Univ, Tainan, Taiwan
[11] CHU Brest, Inst Cancerol & Hematol ARPEGO Network, Brest, France
[12] Pontificia Univ Catolica, Clin San Carlos Apoquindo, Santiago, Chile
[13] Johannes Gutenberg Univ Clin, Mainz, Germany
[14] Tel Aviv Sourasky Med Ctr, Tel Aviv, Israel
[15] Natl Univ Canc Inst Singapore NCIS, Singapore, Singapore
[16] Univ Hosp Modena, Modena, Italy
[17] Merck & Co Inc, Rahway, NJ USA
[18] UCT Univ Canc Ctr, Krankenhaus Nordwest, Frankfurt, Germany