UFSP, COVID-19: raccomandazioni per la diagnosi in ambito ambulatoriale, 2020-12-11, pag. 1 ([Internet, 2020-12-21](https://www.bag.admin.ch/dam/bag/it/dokumente/mt/k-und-i/aktuelle-ausbrueche-pandemien/2019-nCoV/empfehlungen-zur-diagnose-von-covid-19.pdf.download.pdf/COVID-19_raccomandazioni_per_la_diagnosi.pdf))