1. University Medical Center Groningen, Department of Biomedical Engineering, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
2. Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
3. University Medical Center Groningen, Department of Oral and Maxillofacial Surgery, University of Groningen, 9713 GZ Groningen, The Netherlands
4. DWI Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, 52056 Aachen, Germany
5. Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany