[1] Univ Michigan, Hematol Oncol, Ann Arbor, MI 48109 USA
[2] Hetenyi G Korhaz Onkol Kozpont, Oncol, Szolnok, Hungary
[3] Istanbul Univ Cerrahpasa, Med Oncol, Cerrahpasa Sch Med, Istanbul, Turkey
[4] Natl Canc Ctr Hosp East, Med Oncol, Kashiwa, Chiba, Japan
[5] Natl Inst Oncol Hungary, Med Oncol, Budapest, Hungary
[6] Sunnybrook Odette Canc Ctr, Oncol, Toronto, ON, Canada
[7] Univ Laval, CHU Quebec, Surg Urol, Quebec City, PQ, Canada
[8] Hop European George Pompidou, Immunotherapie & Traitement Antiangiogen Pathol C, Paris, France
[9] Ctr Oncol Res CORE, Antwerp, Belgium
[10] Vall dHebron Univ Hosp, Dept Med Oncol, Barcelona, Spain
[11] Ctr Leon Berard, Dept Med Oncol, Rhones Alpes, France
[12] Mem Antalya Hosp, Dept Med Oncol, Antalya, Turkey
[13] Inst Gustave Roussy, Dept Canc Med, Villejuif, France
[14] Hosp del Mar, Dept Med Oncol, Barcelona, Spain
[15] Univ Penn, Abramson Canc Ctr, Hematol Oncol, Philadelphia, PA 19104 USA
[16] Univ Washington, Dept Med Oncol, Seattle, WA 98195 USA
[17] Merck & Co Inc, Stat, Kenilworth, NJ USA
[18] Merck & Co Inc, Clin Res Oncol Dept, Kenilworth, NJ USA
[19] Merck & Co Inc, Med Oncol, Kenilworth, NJ USA
[20] Queen Mary Univ London, Barts Canc Inst, Dept Med Oncol, London, England