. 2012 Jul 17;3(Suppl 3):S198–S215. doi: 10.4103/2152-7806.98583
Copyright: © 2012 Arnold PM.
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Figure 1.
Diagram shows “safe zone” for placement of retractor