1. WHO. Coronavirus disease (COVID-19) Pandemic. 2020. https://www.who.int/emergencies/diseases/novel-coronavirus-2019. Accessed 29 Mar 2020.
2. ATS, Pulmonary Function Laboratories: Advice regarding COVID-19. 2020. https://www.thoracic.org/professionals/clinical-resources/disease-related-resources/pulmonary-function-laboratories.php. Accessed 29 Mar 2020.
3. Discharge criteria for confirmed COVID-19 cases. ECDC technical report. 2020. https://www.ecdc.europa.eu/sites/default/files/documents/COVID-19-Discharge-criteria.pdf Accessed 29 Mar 2020.
4. WHO. Coronavirus disease (COVID-19) outbreak: rights, roles and responsibilities of health workers, including key considerations for occupational safety and health. 2020. https://www.who.int/emergencies/diseases/novel-coronavirus-2019/technical-guidance/health-workers. Accessed 29 Mar 2020.
5. Ministero della Salute. COVID-19 - Sicurezza dei lavoratori. 2020. http://www.salute.gov.it/portale/nuovocoronavirus/dettaglioContenutiNuovoCoronavirus.jsp?lingua=italiano&id=5383&area=nuovoCoronavirus&menu=vuoto. Accessed 29 Mar 2020.