1. Analytical Research and Development, Amgen, One Amgen Center Drive, Thousand Oaks, California
91320, United States
2. Department
of Chemistry and Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts
02115, United States
3. Barnett Institute of Chemical
and Biological Analysis, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
4. Process and Product Development, Amgen, One Amgen Center Drive, Thousand Oaks, California
91320, United States