Review for 10.1186/s12876-021-01822-5 (2021)

Reviewer’s report
Title: 
Vonoprazan versus lansoprazole in the treatment of artificial gastric ulcers
after endoscopic submucosal dissection: a randomized, open-label trial
Version: 
0 
Date: 
22 Mar 2021
Reviewer's report:
The authors clearly showed that Vonoprazan might not be superior to
lansoprazole in the healing of artificial gastric ulcer after ESD.
1. There is no mention of whether or not PPI was given prior to treatment.
2. The positivity of H. pylori was quite low. Could you show the status of
Helicobacter pylori? You included many cases whose H. pylori had been
eradicated?
3. I do not think the ulcer size and specimen size are equal. The size of the
artificial ulcer should be measured after ESD.
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