Measles in Italy 2002: studies show correlation between vaccine coverage and incidence
Ciofi Degli Atti, M L and D'Argenio, P and di Giorgio, G and Filonzi, A and Grandori, L, Weekly releases (1997–2007), 6, 1981 (2002), https://doi.org/10.2807/esw.06.49.01981-en