1. World Health Organisation. COVID-19 strategy update. 2020. Available at https://www.who.int/docs/default-source/coronaviruse/covid-strategy-update-14april2020.pdf (accessed July 2020).
2. American Dental Association. COVID-19 Frequently Asked Questions. 2020. Available online at https://success.ada.org/en/practice-management/patients/coronavirus-frequently-asked-questions (accessed July 2020).
3. Centers for Disease Control and Prevention. Dental Settings: Interim Infection Prevention and Control Guidance for Dental Settings During the Coronavirus Disease 2019 (COVID-19) Pandemic. 2020. Available at https://www.cdc.gov/coronavirus/2019-ncov/hcp/dental-settings.html (accessed July 2020).
4. Ge Z, Yang L, Xia J, Fu X, Zhang Y. Possible aerosol transmission of COVID-19 and special precautions in dentistry. J Zhejiang Univ Sci B 2020; 21: 361-368.
5. Meng L, Hua F, Bian Z. Coronavirus disease 2019 (COVID-19): emerging and future challenges for dental and oral medicine. J Dent Res 2020; 99: 481-487.