Institution: | (1) Virology Laboratory, Istituto Superiore di Sanità, Viale Regina Elena 299, I-00161 Rome, Italy; Phone: (+39/06) 4990-3233, Fax -2662, e-mail: rapicett@iss.it, IT;(2) Dept. of Infectious and Tropical Diseases, Policlinico Umberto I, University of Rome “La Sapienza”, Rome, Italy, IT;(3) Pediatric Clinic, Policlinico Umberto I, University of Rome “La Sapienza” Rome, Italy, IT |