[1] Univ Zurich, Univ Hosp Zurich, Zurich, Switzerland
[2] Peter MacCallum Canc Ctr, Melbourne, Vic, Australia
[3] Hosp Med Sur, Mexico City, DF, Mexico
[4] Univ Catolica San Antonio, Hosp G Univ Morales Meseguer, IMIB Arrixaca, Dept Hematol & Med Oncol, Murcia, Spain
[5] Univ Med Ctr Hamburg Eppendorf, Hamburg, Germany
[6] Fed State Budgetary Inst, NN Blokhin Natl Med Res Ctr Oncol, Minist Hlth Russian Federat NN Blokhin NMRCO, Moscow, Russia
[7] Inst Portugues Oncol Lisboa, Lisbon, Portugal
[8] Ctr Leon Berard, Dept Med Oncol, Lyon, France
[9] Monash Hlth, Dept Med Oncol, Melbourne, Vic, Australia
[10] Hosp Univ 12 Octubre, Med Oncol Dept, Madrid, Spain
[11] Hosp Duran & Reynals, Inst Catala Oncol Hosp, Dept Med Oncol, Barcelona, Spain
[12] Dana Farber Canc Inst, Lank Ctr Genitourinary Oncol, Boston, MA 02115 USA
[13] Univ Naples II Federico, Dept Clin Med & Surg, Oncol Unit, Naples, Italy
[14] Royal Marsden NHS Fdn Trust, London, England
[15] Princess Margaret Canc Ctr, Toronto, ON, Canada
[16] Harvard Med Sch, Brigham & Womens Hosp, Hematol Div, Boston, MA 02115 USA