Associations between sleep problems and emotional/behavioural difficulties in healthy children and adolescents.

"Declarations Ethics approval and consent to participateInformed written consent was obtained from all parents before their children participated in the study. The study was conducted in compliance with the Declaration of Helsinki and with approval from the ethics committee of the Medical Faculty of the University of Leipzig (Reg. No. 264–10-19,042,010). Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding Open Access funding enabled and organized by Projekt DEAL. This publication is supported by LIFE (Leipzig Research Center for Civilization Diseases), University of Leipzig. LIFE is funded by the European Union, the European Social Fund (ESF) and the European Regional Development Fund (ERDF), and by the Free State of Saxony within the framework of the Excellence Initiative. The funding sources were not involved in the data collection nor in the analysis and interpretation of the data."