Corrigendum: Disappearance of seasonal respiratory viruses in children under two years old during COVID-19 pandemic: A monocentric retrospective study in Milan, Italy - Ippolito, Giulio; La Vecchia, Adriano; Umbrello, Giulia; Di Pietro, Giada; Bono, Patrizia; Scalia Catenacci, Stefano; Pinzani, Raffaella; Tagliabue, Claudia; Bosis, Samantha; Agostoni, Carlo; Marchisio, Paola Giovanna (Frontiers in Pediatrics, 2022)