1. ETH Zurich, Food & Soft Materials; Department of Health Science & Technology; Schmelzbergstrasse 9, LFO, E23 8092 Zürich Switzerland
2. ETH Zurich, Cartilage Engineering and Regeneration; Department of Health Science & Technology; Otto-Stern-Weg 7, HPL, J22 8093 Zürich Switzerland
3. ETH Zurich, Polymer Physics; Department of Materials; Vladimir-Prelog-Weg 5 CH-8093 Zürich Switzerland
4. Biointerface Laboratory; Department of Mining and Materials Engineering; McGill University; 3610 University Street Montreal Quebec H3A 0C5 Canada