1. Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
2. Novo Nordisk A/S, Novo Nordisk Park 1, 2760 Måløv, Denmark
3. Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
4. Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds vej 14, 8000 Aarhus C, Denmark