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Muraja-Murro A, Kulkas A, Hiltunen M, Kupari S, Hukkanen T, Tiihonen P, Mervaala E, Töyräs J.Muraja-Murro A, et al. Among authors: toyras j.J Sleep Res. 2013 Dec;22(6):663-9. doi: 10.1111/jsr.12070. Epub 2013 Aug 12.J Sleep Res. 2013.PMID: 23937311