1. 3B's Research Group—Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, University of Minho, Guimarães, Portugal.
2. PT Government Associated Laboratory, IBB—Institute for Biotechnology and Bioengineering, Braga, Portugal.
3. Department of Mathematics for Science and Technology, Research Centre Officina Mathematica, University of Minho, Guimarães, Portugal.