1. Department of Science and Technological Innovation Università del Piemonte Orientale “Amedeo Avogadro” Viale T. Michel 11 15121 Alessandria Italy
2. Centre de Biophysique Moléculaire CNRS UPR 4301 Université d'Orléans Rue Charles Sadron 45071 Orléans Cedex 2 France
3. Department of Biochemistry and Molecular Biology School of Chemistry Complutense University Ciudad Universitaria s/n 28040 Madrid Spain
4. Department of Biomedical Engineering King's College London School of Biomedical Engineering and Imaging Sciences Westminster Bridge Road SE1 7EH London UK