Setti, L.; Passarini, F.; De Gennaro, G. (23 April 2020). "Airborne Transmission Route of COVID-19: Why 2 Meters/6 Feet of Inter-Personal Distance Could Not Be Enough". Int. J. Environ. Res. Public Health. 17(8) 2932 (8): 2932. doi:10.3390/ijerph17082932. PMID32340347.
Lam, Simon Ching; Suen, Lorna Kwai Ping; Cheung, Teris Cheuk Chi (May 2020). "Global risk to the community and clinical setting: Flocking of fake masks and protective gears during the COVID-19 pandemic". American Journal of Infection Control. doi:10.1016/j.ajic.2020.05.008. PMID32405127.
Setti, L.; Passarini, F.; De Gennaro, G. (23 April 2020). "Airborne Transmission Route of COVID-19: Why 2 Meters/6 Feet of Inter-Personal Distance Could Not Be Enough". Int. J. Environ. Res. Public Health. 17(8) 2932 (8): 2932. doi:10.3390/ijerph17082932. PMID32340347.
Lam, Simon Ching; Suen, Lorna Kwai Ping; Cheung, Teris Cheuk Chi (May 2020). "Global risk to the community and clinical setting: Flocking of fake masks and protective gears during the COVID-19 pandemic". American Journal of Infection Control. doi:10.1016/j.ajic.2020.05.008. PMID32405127.