1. Centre for Pharmaceutical Nanotechnology and Nanotoxicology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark
2. Department of Chemistry, Stanford University, Keck Science Building, 380 Roth Way, Stanford, California 94305, United States
3. School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Stopford Building, Oxford Road, Manchester M13 9PT, United Kingdom
4. Department of Micro- and Nanotechnology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
5. NanoScience Centre, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark