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She also declares receiving grants for research projects from Almirall, Novartis and Roche. L. L.T. declares receiving fees for travel to conferences and seminars from Almirall and Eisai, as well as consulting fees from Idorsia. She also declares receiving grants for research projects from Almirall. The other authors declare not conflicts of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflicts of interest"}},{"value":"This study has been approved by the Ethics Committee of the Hospital Universitario de Getafe (Madrid, Spain) (reference number A09\/23). All participants consented to answering the questionnaire after receiving detailed information about the project. This research forms part of an earlier work analyzing different aspects of RLS in patients with MS, which was also approved by the same Ethics Committee (reference number A07\/22). This study was conducted in accordance with the requirements outlined in the Declaration of Helsinki (Fortaleza October 2013), the Law 14\/2007 on Biomedical Research and the Organic Law 3\/2018 on Personal Data Protection.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}],"article-number":"96"}}