671576.fig.001a
(a)
671576.fig.001b
(b)
671576.fig.001c
(c)
671576.fig.001d
(d)
Figure 1: Magnifying endoscopic (ME) findings following crystal violet staining were classified into 4 grades as follows: ME-A, regular arrangement of normal-appearing round to oval pits (a); ME-B, irregular arrangement with/without enlarged spaces between the even pits (b); ME-C, irregular pits in size and shape with more irregular arrangement of pits compared to ME-B (c); and ME-D, disrupted or disappeared pits (d).