Prevalence and Stability of Internalizing Symptoms in Children and Adolescents: Gender Differences and Associated Factors. - Segura-Frontelo, Alberto; Girela-Serrano, Braulio; Gutiérrez-Rojas, Luis; Porras-Segovia, Alejandro; Peñuelas-Calvo, Inmaculada; Spiers, Alex; Baca-García, Enrique; Barrigón, María Luisa; Carballo, Juan José (Journal of Child & Family Studies, 2025)