Corrigendum: A Dietary Assessment Training Course Path: The Italian IV SCAI Study on Children Food Consumption - Turrini, Aida; Catasta, Giovina; Censi, Laura; Comendador Azcarraga, Francisco Javier; D'Addezio, Laura; Ferrari, Marika; Le Donne, Cinzia; Martone, Deborah; Mistura, Lorenza; Pettinelli, Antonella; Piccinelli, Raffaela; Saba, Anna; et al. (Frontiers in Public Health, 2021)