1. Wellcome-MRC Institute of Metabolic Science-Metabolic Research Laboratories, Level 4, Wellcome-MRC Institute of Metabolic Science, Addenbrooke’s Hospital, Cambridge CB2 0QQ, U.K.
2. Peptidomics and Proteomics Core Facility, Level 4, Wellcome-MRC Institute of Metabolic Science, Addenbrooke’s Hospital, Cambridge CB2 0QQ, U.K.
3. Faculty of Pharmaceutical Sciences, University of Iceland, 107 Reykjavík, Iceland
4. Drug Development Solutions, Part of Alliance Pharma Ltd., Fordham CB7 5WW, U.K.