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Erratum to "Withdrawal notice to the effectiveness of diaphragmatic breathing relaxation training for improving sleep quality among nursing staff during the COVID-19 outbreak: a before and after study" [Sleep Medicine X (2) (2020) 100026].
Liu Y, Jiang TT, Shi TY, Liu YN, Liu XM, Xu GJ, Li FL, Wang YL, Wu XY. Liu Y, et al. Among authors: liu yn, liu xm. Sleep Med X. 2020 Dec;2:100030. doi: 10.1016/j.sleepx.2020.100030. Epub 2020 Dec 5. Sleep Med X. 2020. PMID: 33524078 Free PMC article.
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