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The skin temperature measurements after wearing the KF94 mask. The skin temperature measurement before and after mask‐wearing for each measurement area (A). The rate of change in skin temperature according to the time of wearing the mask compared with before wearing the mask (B). *P < .05, **P < .005, ***P < .001 1 or 6 h after wearing a mask vs before wearing a mask. †<.05, †† P < .005, ††† P < .001 non–mask‐wearing area vs mask‐wearing area
