. 2014 Jan 24;3:51. doi: 10.4103/2277-9175.125774
Copyright: © 2014 Nezamoddin.
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 5.
Shape of sphenoid sinus ostium