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. 2020 Jul 15;31(1):34–44. doi: 10.1038/s41370-020-0249-8

Fig. 2. Contact frequency (contacts/h) of hand-to-head (all), -mouth, -eyes, -nose, and -other contacts for adults and children.

Fig. 2

Statistical comparisons were calculated using a Wilcoxon rank sum test and can be seen over bars.