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All participants provided informed consent. For participants under 16 years of age, informed consent was obtained from their legal guardians. In all cases, legal guardians were informed about the study and agreed to the adolescents\u2019 participation. Our study adhered to the Declaration of Helsinki.","order":1,"name":"Ethics","label":"Ethics approval and consent to participate","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Not applicable.","order":2,"name":"Ethics","label":"Consent for publication","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Julia Garc\u00eda-Escalera receives royalties for the Spanish translation of the Unified Protocols for Transdiagnostic Treatment of Emotional Disorders in Children and Adolescents, published by Editorial Pir\u00e1mide under license from Oxford University Press. She is also occasionally compensated for providing clinical training and implementation support related to this intervention.","order":3,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Declarations"}}],"article-number":"1456"}}