Letters To The Editor
Copyright ©The Author(s) 2017.
World J Gastroenterol. May 28, 2017; 23(20): 3758-3760
Published online May 28, 2017. doi: 10.3748/wjg.v23.i20.3758
Figure 1
Figure 1 Pain intensity assessed with a 10 cm visual analog scale ranges from 0 to 10. Each point represents mean ± SEM (standard error of mean). There were 5 patients in the transcutaneous electrical nerve stimulation (TENS) group and 4 patients in the TENS + transcranial direct current stimulation (tDCS) group.