1. World Health Organization: WHO Coronavirus (COVID-19) Dashboard. Retrieved from: https://covid19.who.int
2. Effects of social distancing on the spreading of COVID-19 inferred from mobile phone data;Khataee;Sci Rep.,2021
3. Safety and Efficacy of the BNT162b2 mRNA Covid-19 Vaccine;Polack;N Engl J Med,2020
4. Beauchamp J, Davis C, Pleil J. Breathborne Biomarkers and the Human Volatilome. 2nd edition. 2020; 675 pp.
5. The scent of COVID-19: viral (semi-)volatiles as fast diagnostic biomarkers?;Lamote;J. Breath Res.,2020