R. E. Velasteguí Hernandez, M. A. Córdova Suárez, and E. P. Villacres Cevallos, “Covid-19. Biomechanical Design of the Nursing Assistant post. Hospital case: Private Technical University of Loja ”, Anatomía Digital, vol. 4, no. 3.1, pp. 6-17, Sep. 2021.