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. 2016 Jul 16;16:109. doi: 10.1186/s12886-016-0290-5

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© The Author(s). 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 6 — “Endothelial cell density and area, and the percentage of hexagonal cells in the central and peripheral regions of the transparent cornea”. Caption: Group A: 0–19 years old; Group B: 20–39 years old; Group C: 40–59 years old; Group D: 60–79 years old. *Significant difference between the central and peripheral regions (P < 0.05; ---- central region, ▬ peripheral region). Bars represent the standard deviation (up-direction: central region; down-direction: peripheral region)