. 2017 Dec 11;3:67. doi: 10.1051/sicotj/2017053
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Vertical line drawn over the vertical ridge.