1. 3B's Research Group, Biomaterials, Biodegradables and Biomimetics, University of Minho, Campus de Gualtar, Braga, Portugal
2. Department of Polymer Engineering, University of Minho, Campus de Azurém, Guimarães, Portugal
3. Institute of Biomaterials and Biomedical Engineering, Rosebrugh Building, Taddle Creek Road, Toronto, Ontario, Canada
4. Department of Biology, University of Miho, Campus de Gualtar, Braga, Portugal