Review for 10.1186/s12876-021-01680-1 (2021)

Reviewer’s report
Title: 
Ten-day bismuth-containing quadruple therapy versus 7-day proton pump
inhibitor-clarithromycin containing triple therapy as first-line empirical therapy
for the Helicobacter pylori infection in Korea: A randomized open-label trial
Version: 
2 
Date: 
15 Feb 2021
Reviewer's report:
Please improve the quality of figures 1 and 2. They are not clear.
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Is the study design appropriate to answer the research question (including the use
of appropriate controls), and are the conclusions supported by the evidence
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