Romero, Pedro E., et al. “Use of SARS-CoV-2 Genomes to Estimate the Effective Reproductive Number (Rt) in Peru During March – April 2020”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 38, no. 2, Mar. 2021, pp. 267-71, https://doi.org/10.17843/rpmesp.2021.382.6417.