Villarreal-Puga M, Villarreal Puga J. Inequalities in Retention and Academic Performance in Virtual Environments: A Comparative Analysis Between Immigrant and Ecuadorian Students in Ecuador Participating in a Continuing Education Course in Moodle. Revista Interdisciplinar da Mobilidade Humana. 2025;33:e332169. doi:10.1590/1980-85852503880003319