1. Department of Pharmacy, Science for Life Laboratory, Uppsala University, 75123 Uppsala, Sweden
2. Department of Materials and Environmental Chemistry, Stockholm University, 10691 Stockholm, Sweden
3. Department of Physics and Astronomy, Uppsala University, 75121 Uppsala, Sweden
4. Department of Materials Science and Engineering, Uppsala University, 75103 Uppsala, Sweden
5. Department of Pharmacy, Uppsala University, 75123 Uppsala, Sweden
6. Department of Chemical Engineering and J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611-6005, United States