Self-efficacy and stress as predictors of anxiety in Peruvian and Mexican university students: a cross-sectional study - Anicama, José; Calderón, Raymundo; Javier-Aliaga, David; Caballero, Graciela; Talla, Karina; Pizarro, Ruth; Calizaya-Milla, Yaquelin E.; Saintila, Jacksaint (Frontiers in Education, 2025)