Beretta, O., Casati Pagani, S., Lazzaro, M., Merlani, G. and Bouvier Gallacchi, M. (2021) “Seroprevalence of the SARS-CoV-2 virus in the population of the southern Switzerland (Canton Ticino) – cohort study, results at 12 months”, Swiss Medical Weekly, 151(5152), p. w30116. doi: 10.4414/SMW.2021.w30116.