Surveillance on Healthcare Workers During the First Wave of SARS-CoV-2 Pandemic in Italy: The Experience of a Tertiary Care Pediatric Hospital oleh Valentina Guarnieri, Valentina Guarnieri, Maria Moriondo, Maria Moriondo, Mattia Giovannini, Mattia Giovannini, Lorenzo Lodi, Lorenzo Lodi, Silvia Ricci, Silvia Ricci, Laura Pisano, Laura Pisano, Paola Barbacci, Costanza Bini, Giuseppe Indolfi, Giuseppe Indolfi, Alberto Zanobini, Chiara Azzari, Chiara Azzari