Brief Articles
Copyright ©2009 The WJG Press and Baishideng.
World J Gastroenterol. Oct 14, 2009; 15(38): 4763-4769
Published online Oct 14, 2009. doi: 10.3748/wjg.15.4763
Figure 1
Figure 1 The figure shows the three electrode configuration, with the ground electrode placed on the back.