1. Proten Analytical Chemistry, Genentech, A Member of the Roche Group, 1 DNA Way, South San Francisco, California 94080, United States
2. Department of Chemistry and Biochemistry, 95 Chieftain Way, Florida State University, Tallahassee, Florida 32304, United States
3. Biological Technologies, Genentech, A Member of the Roche Group, 1 DNA Way, South San Francisco, California 94080, United States
4. Pharmaceutical Development, Genentech, A Member of the Roche Group, 1 DNA Way, South San Francisco, California 94080, United States
5. Analytical Operations, Genentech, A Member of the Roche Group, 1 DNA Way, South San Francisco, California 94080, United States
6. Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, Florida 32310, United States