1. Institute of Molecular Biology
and Pathology CNR, and Department of Biochemical Sciences, Sapienza University of Roma, P.le A. Moro 5, 00185
Rome, Italy
2. Dipartimento di Malattie Infettive,
Parassitarie e Immunomediate, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy