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. 2020 Mar 13;14(1):100–106. doi: 10.1055/s-0040-1702258

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Fig. 4 — Absolute and signed histogram of AA-F versus Zim-F. The average distance of the differences was 1.16 ± 0.87 mm. The absolute difference ranged from 0 to 4.21 mm. Positive differences are seen in red and negative differences in blue. The average difference was 0.39 ± 1.40 mm and 25.79% of the faces were similar. AA-F, African American females; Zim-F, Zimbabwean females.