M. Riccò, L. Vezzosi, G. Gualerzi, A. Odone, and C. Signorelli, “Knowledge, attitudes, and practices of influenza and pneumococcal vaccines among agricultural workers: results of an Italian a cross-sectional study”, Acta Biomed, vol. 90, no. 4, pp. 439–450, Dec. 2019, doi: 10.23750/abm.v90i4.7631.