. 2013 Jul-Sep;23(3):191–194. doi: 10.4103/0971-3026.120252
Copyright: © Indian Journal of Radiology and Imaging
This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
VR step model