1. Center for Tissue Engineering (C.I.T.), Via Ferrata 1, 27100 Pavia, Italy
2. Department of Chemistry “G. Ciamician” and National Consortium of Materials Science and Technology (INSTM, RU Bologna), University of Bologna, Via Selmi 2, 40126 Bologna, Italy
3. Salvatore Maugeri Foundation IRCCS,Via S. Maugeri 4, 27100 Pavia, Italy