1. Department of Biomaterials; Radboud University Medical Center; 6525 EX Nijmegen The Netherlands
2. Institute of Organic and Macromolecular Chemistry; Heinrich-Heine-University Düsseldorf; 40225 Düsseldorf Germany
3. Department of Pharmaceutics; Utrecht Institute for Pharmaceutical Sciences (UIPS); Faculty of Science; Utrecht University; 3508 TB Utrecht The Netherlands
4. Department of Materials Chemistry; Angstrom Laboratory; A Science for Life Laboratory; Uppsala University; SE 75121 Uppsala Sweden
5. Institute of Biomaterials; Department of Materials Science and Engineering; University of Erlangen-Nuremberg; 91058 Erlangen Germany