1. GRF-CFUM, Physics Department, University of Minho, 4800-058 Guimarães, Portugal
2. Center for Biomaterials and Tissue Engineering, CBIT, Universitat Politècnica de València, València, Spain
3. Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), València, Spain
4. BCMaterials, Parque Científico y Tecnológico de Bizkaia, 48160 Derio, Spain
5. SEG-CEMUC Mechanical Engineering Department, University of Coimbra, 3030-788 Coimbra,Portugal