Facciolà, A., Visalli, G., Orlando, A., Bertuccio, M., Spataro, P., Squeri, R., Picerno, I. and Di Pietro, A. (2019) “Vaccine hesitancy: An overview on parents’ opinions about vaccination and possible reasons of vaccine refusal”, Journal of Public Health Research, 8(1). doi: 10.4081/jphr.2019.1436.