1. 3B's Research Group, I3Bs – Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Portugal
2. ICVS/3B's–PT Government Associate Laboratory, Braga/Guimarães, Portugal
3. Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, P.O. Box 1109, Blindern, Oslo 0317, Norway