. 2012 Feb 14;2012:247351. doi: 10.5402/2012/247351
Copyright © 2012 A. Khatri and N. Kalra.
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 2.
Wong-Baker faces pain rating scale (WBFPS).