Editorial
Copyright ©The Author(s) 2019.
World J Surg Proced. May 21, 2019; 9(1): 1-6
Published online May 21, 2019. doi: 10.5412/wjsp.v9.i1.1
Figure 1
Figure 1 Several protocols concerning the points of injection have been proposed. There is still an ongoing debate about them.