AMGEN INC.; PARAS, Nick A,; BROWN, James; CHENG, Yuan; HITCHCOCK, Stephen; JUDD, Ted; LOPEZ, Patricia; MINATTI, Ana Elena; NIXEY, Thomas; POWERS, Timothy; TEGLEY, Christopher M.; XUE, Qiufen; YANG, Bryant; ZHONG, Wenge Patent: WO2011/90911 A1, 2011 ; WO 2011/090911 A1