1 3B´s Research Group, I3B´s-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark-Parque de Ciência e Tecnologia, 4805-017 Barco, Guimarães, Portugal.
2 ICVS/3B´s-PT Government Associate Laboratory, Braga/Guimarães, Portugal.