1. Elettronica S.p.A., Via Tiburtina Valeria, Km 13.700, 00131 Rome, Italy
2. ViroStatics S.r.l., Viale Umberto I, 46, 07100 Sassari, Italy
3. Defense Institute for Biomedical Sciences, 00184 Rome, Italy
4. Department of EECS, University of California, Berkeley, CA 94720, USA