[1] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[2] Hosp Univ 12 Octubre, Madrid, Spain
[3] Antwerp Univ Hosp UZA, Edegem, Belgium
[4] Dexeus Univ Hosp, Dr Rosell Oncol Inst, Quiron Salud Grp, Barcelona, Spain
[5] Hosp Univ Sagrat Cor, Barcelona, Spain
[6] Hosp Univ Virgen Macarena, Serv Oncol, Seville, Spain
[7] Chonnam Natl Univ, Hwasun Hosp 13868, Hwasun Gun, South Korea
[8] Catholic Univ Korea, Seoul St Marys Hosp, Seoul, South Korea
[9] Merck KGaA, Global Clin Dev, Darmstadt, Germany
[10] Merck KGaA, Darmstadt, Germany
[11] Merck KGaA, Dept Biostat, Darmstadt, Germany
[12] Mem Sloan Kettering Canc Ctr, 1275 York Ave, New York, NY 10021 USA