Rigoberto Fimia-Duarte et al. 2021. Study on the Methodology of Regressive Objective Regression According to the New SARS-CoV-2 COVID-19 Pandemic in the Municipality of Santa Clara and Cuba. Issues and Development in Health Research Vol. 2. (Aug. 2021), 47–55. DOI:https://doi.org/10.9734/bpi/idhr/v2/11458D.