1. Department of Chemistry, Physical and Theoretical Chemistry Laboratory; University of Oxford; South Parks Road; Oxford; OX1 3QZ; UK
2. Diabetes Protein Engineering; Novo Nordisk A/S; Novo Nordisk Park; DK-2760; Måløv; Denmark
3. Waters Corporation, MS Technologies Centre; Manchester; M22 5PP; UK
4. University of Southern Denmark; Department of Biochemistry and Molecular Biology; Campusvej 55; DK-5230; Odense M; Denmark