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Sleep problems and heart rate variability over the working day.
Jackowska M, Dockray S, Endrighi R, Hendrickx H, Steptoe A. Jackowska M, et al. Among authors: endrighi r. J Sleep Res. 2012 Aug;21(4):434-40. doi: 10.1111/j.1365-2869.2012.00996.x. Epub 2012 Feb 7. J Sleep Res. 2012. PMID: 22309485
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