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. 2021 Jul 19;62(8):717–725. doi: 10.3349/ymj.2021.62.8.717

Fig. 2. Longitudinal changes in (A) digit span backward test scores and (B) subjective sleep quality in the EAM intervention and control groups. DST-b, digit span test-backward; EAM, electrical automatic massage; sqrt, square root transformation.

Fig. 2