. 2012 Oct 31;2012:282959. doi: 10.1155/2012/282959
Copyright © 2012 Ali M. Soltani et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Caucasian patient demonstrating an absent PL.