Medina-Fernández, Josué Arturo, Isaí Arturo Medina-Fernández, Nissa Yaing Torres-Soto, Luis Carlos Cortez-González, Fernanda Guadalupe Rascón-Arriaga, and Diana Berenice Cortes-Montelongo. 2022. “Effect of Fear, Concern, and of Risk Factors for Complicated Covid-19 on Self-Care in People in Pre-Elderly and Elderly Stages”. Investigación Y Educación En Enfermería 40 (3). https://doi.org/10.17533/udea.iee.v40n3e10.