Clinical Research
Copyright ©The Author(s) 2002.
World J Gastroenterol. Aug 15, 2002; 8(4): 766-768
Published online Aug 15, 2002. doi: 10.3748/wjg.v8.i4.766
Table 3 The grade before dilation (177 sessions/55 patients)
GradeSessions%
000
I2815.8
II9955.9
III & IV5028.3