[1] Amgen Inc, Dept Med Chem, Cambridge, MA 02142 USA
[2] Amgen Inc, Dept Mol Struct, Cambridge, MA 02142 USA
[3] Amgen Inc, Dept Mol Struct, Thousand Oaks, CA 91320 USA
[4] Amgen Inc, Dept Pharmacokinet & Drug Metab, Thousand Oaks, CA 91320 USA
[5] Amgen Inc, Dept Neurosci, Thousand Oaks, CA 91320 USA