Affiliation: | a Chemistry Research & Discovery, Amgen Inc., 1120 Veterans Blvd, South San Francisco, CA 94080, USA b Chemistry Research & Discovery, Amgen Inc., One Amgen Center Drive Thousand Oaks, CA 91320, USA c Chemistry Research & Discovery, Amgen Inc., 360 Binney Street Cambridge, MA 02142, USA d Oncology Research, Amgen Inc., One Amgen Center Drive Thousand Oaks, CA 91320, USA e PKDM, Amgen Inc., One Amgen Center Drive Thousand Oaks, CA 91320, USA f PKDM, Amgen Inc., 1120 Veterans Blvd, South San Francisco, CA 94080, USA |