[1] Univ Hosp Essen Westdeutsches Tumorzentrum, Med Oncol Dept, Essen, Germany
[2] Natl Taiwan Univ, Canc Ctr, Dept Internal Med & Oncol, Taipei, Taiwan
[3] Univ Bordeaux, Bordeaux PharmacoEpi, Bordeaux, France
[4] Merck KGaA, R&D Global Biostat Epidemiol & Med Writing, Darmstadt, Germany
[5] Merck KGaA, Global Epidemiol Dept, Darmstadt, Germany
[6] Merck KGaA, Global Med Affairs, Darmstadt, Germany
[7] Merck KGaA, Med Oncol, Darmstadt, Germany
[8] Cytel Singapore Pte Ltd, Project Based Serv, Singapore, Singapore
[9] Merck Serono, R&D Global Biostat, Beijing, Peoples R China
[10] Med Univ Vienna, Gen Hosp, Internal Med 1, Dept Med Oncol, Vienna, Austria
[11] Vienna Gen Hosp, Comprehens Canc Ctr, Oncol, Vienna, Austria
[12] Med Univ Vienna, Vienna, Austria