1. Division of Protein Technology, School of Biotechnology, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
2. Linnæus Center of Biomaterials Chemistry, Linnæus University, Kalmar, Sweden
3. Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
4. The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Karolinska University Hospital, S-17176 Stockholm, Sweden