Candeiro, G., J. R. Neri, D. M. Moreira, C. P. . Feijão, and G. Gavini. “A Protocol Proposal for Endodontic Appointments to Avoid Contamination and Transmission of Coronavirus Disease (Covid-19)”. Iranian Endodontic Journal, vol. 15, no. 3, Aug. 2020, pp. 195-7, doi:10.22037/iej.v15i3.31284.