Oxaliplatin and 5-FU/folinic acid (modified FOLFOX6) with or without aflibercept in first-line treatment of patients with metastatic colorectal cancer: the AFFIRM study

University Hospital Carl Gustav Carus, Corporació Sanitària Parc Taulí, Deleted Institution, The Christie NHS Foundation Trust, University of Leicester, Complejo Hospitalario Universitario de Santiago, Yonsei University, Pyatigorsk Oncology Center, Prosper Hospital, Korea University Medical Center, University of Mannheim, Heidelberg University, University Hospital Heidelberg, Hunter Medical Research Institute, Calvary Mater Newcastle Hospital, Mater Hospital, St James's University Hospital, Samara Regional Clinical Oncology Center, Mount Vernon Cancer Centre, Cancer Services, University Hospital Southampton NHS Foundation Trust, Medizinische Hochschule Hannover, Monash University