ACKNOWLEDGEMENTS This project benefited from valuable collaborations of experts and institutions: National Children's Bureau (the United Kingdom), Companhia de Ideias (Portugal), Komunikujeme (Czech Republic) and Eurecat and Universitat Rovira i Virgili (Spain). The authors thank the teachers, parents and students of each four-participating countries for their enthusiastic participation in this study. This study project was funded by the European Commission (European Directorate General HEALTH—December 19, 2012). This funder did not play a role in the Spanish study design, data collection, study management, data analysis, data interpretation, article writing or decision to submit the report for publication. This article in journal has been possible with the support of the Secretaria d'Universitats i Recerca del Departament d'Empresa i Coneixement de la Generalitat de Catalunya, the European Union (UE) and the European Social Fund (ESF) (2021 FI_B1 00160).Peer reviewedPublisher PD
