Review for 10.1186/s12876-020-01597-1 (2021)

Reviewer’s report
Title: 
Prevalence and risk factors of bowel symptoms in Korean patients with
ulcerative colitis in endoscopic remission: a retrospective study
Version: 
0 
Date: 
26 Sep 2020
Reviewer's report:
Title and manuscript are clear and it's clear what the study found. The number of
cases is good.
There is a typing error in line 2
Introduction: i think should be made clear how much increased the incidence and
prevalence of UC in Europe and North America, Asia and Korea in last decades.
Relevant references like n 3 (solberg IC et al) and n 8 (Travis SP at al) 
should be
updated with latest one.
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