[1] Ruhr Univ Bochum, St Josef Hosp, Bochum, Germany
[2] Tel Aviv Univ, Sheba Med Ctr Tel Hashomer, Inst Oncol, Tel Aviv, Israel
[3] Univ Chicago, Chicago, IL 60637 USA
[4] AstraZeneca, Gothenburg, Sweden
[5] Bayer AG, Pharmaceut, Oncol SBU, Berlin, Germany
[6] AstraZeneca, Cambridge, England
[7] AstraZeneca, Gaithersburg, MD USA
[8] Merck & Co Inc, Kenilworth, NJ USA