Evaluating the effectiveness of integrating biofeedback in the treatment of aggressive outbursts (BRET-IA2): A study protocol - Alberto J. Molina-Cantero; Isabel Rojas-Pérez; Montserrat Gómez de Terreros-Guardiola; Isabel Gómez-González; José C. Vidosa-Batllés; Teresa de Jesús Bermejo-González; Manuel Merino-Monge (PLoS ONE, 2025)