Review for 10.1186/s12876-021-01800-x (2021)

Reviewer’s report
Title: 
Risk factors associated with functional dyspepsia in Chinese children:  a cross-sectional study
Version: 
2 
Date: 
19 Apr 2021
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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 presented?
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