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Comparison of mean midsleep on work days (MSW) (a), midsleep free days (MSF) (b) and Morningness-Eveningness Questionnaire MEQ (c) score between this study (N = 32) and data from Zavada et al. (N = 1342) [16]. MSW and MSF in hh:mm. Whiskers represent standard deviations. * p < 0.05; ** p < 0.01.
