1. Institute of Pharmaceutical Sciences Department of Chemistry and Applied Biosciences ETH Zurich Zurich 8093 Switzerland
2. Musculoskeletal Research Unit Vetsuisse Faculty University of Zurich Zurich 8057 Switzerland
3. Complex Materials Department of Materials ETH Zurich Zurich 8093 Switzerland
4. Department of Pulmonology University Hospital Zurich Zurich 8006 Switzerland
5. Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering Southern University of Science and Technology Shenzhen 518055 P. R. China