A randomised, double-masked phase III/IV study of the efficacy and safety of Avastin®(Bevacizumab) intravitreal injections compared to standard therapy in subjects with choroidal neovascularisation secondary to age-related macular degeneration: clinical trial designPraveen J Patel; Catey Bunce; Adnan Tufail; the ABC Trial Investigators · 2008