Predictive factors of the psychological impact of the COVID-19 pandemic on university students: a study in six Ibero-American countries

M. Paola Jiménez-Villamizar, Anna Muro, José-Blas Navarro, Meritxell Carmona, Ramon Cladellas, Albert Feliu-Soler, Elvira Reche-Camba, Daniel López-Fernández, Jorge Luis Méndez-Ulrich, Clara Selva, Antoni Sanz