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M. A. Córdova Suárez, L. J. Tapia Vasco, Z. E. Zambrano Ochoa, and M. T. Chaglla Cango, “Coronavirus COVID-19: Quality assurance in the home delivery service of processed meat in the city of Ambato”, CCD, vol. 3, no. 3, pp. 486-494, Aug. 2020.