1. Department of Molecular Medicine, University of Pavia, Pavia, Italy;
2. Biotechnology Research Laboratories, Istituto di Ricovero e Cura a Carattere Scientifico San Matteo Foundation, Pavia, Italy;
3. Department of Biomedical Engineering, Tufts University, Medford, MA;
4. Department of Biomolecular Sciences, Biochemistry and Molecular Biology Section, University of Urbino “Carlo Bo,” Urbino, Italy;
5. Department of Physics, Tufts University, Medford, MA;
6. Department of Chemistry, Physical Chemistry Section, University of Pavia, Pavia, Italy;
7. Department of Translational Research, Stem Cells Unit, Istituto di Ricovero e Cura a Carattere Scientifico Centro di Riferimento Oncologico, Aviano, Italy; and
8. Department of Molecular and Experimental Research, The Scripps Research Institute, La Jolla, CA