Review for 10.1186/s12876-021-01841-2 (2021)

Reviewer’s report
Title: 
The prevalence of HEV among non-A-C hepatitis in Qatar and efficiency
of serological markers for the diagnosis of hepatitis E
Version: 
3 
Date: 
21 May 2021
Reviewer's report:
The authors modified and improved the manuscript accordingly.
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Is the study design appropriate to answer the research question (including the use
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