J. Alcocer-Carranza, A. L. Gonzalez-Carlo, L. Reyna-Avila, E. Peña-Marcial, and R. Pérez-Cabañas, “Attitude towards the COVID-19 vaccine in residents of the Guerrero State, México”, Univ. Salud, vol. 24, no. 2, pp. 108–116, Apr. 2022.