Childhood vaccinations. Validation of a tool for measuring knowledge, attitudes and vaccine hesitancy in pregnant women - Azzurra Massimi; Annalisa Rosso; Carolina Marzuillo; Grazia Pia Prencipe; Pasquale De Soccio; Giovanna Adamo; Giulia Sturabotti; Corrado De Vito; Paolo Villari (Epidemiology, Biostatistics and Public Health)