1. Division of Nanotechnology and Functional Materials, Department of Materials Science and Engineering, Ångström Laboratory, Uppsala University, Box 35, 751 03 Uppsala, Sweden
2. Division of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
3. Division of Health Sciences and Technology, Harvard University − Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, United States
4. Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden
5. Department of Chemistry, Ångström Laboratory, Uppsala University, Box 35, 751 03 Uppsala, Sweden
6. Department of Materials Science and Engineering, Applied Mechanics, Ångström Laboratory, Uppsala University, Box 35, 751 03 Uppsala, Sweden