(1)
Beretta, O.; Casati Pagani, S.; Lazzaro, M.; Merlani, G.; Bouvier Gallacchi, M. Seroprevalence of the SARS-CoV-2 Virus in the Population of the Southern Switzerland (Canton Ticino) – Cohort Study, Results at 12 months. Swiss Med Wkly 2021, 151, w30116.