Review for 10.1186/s12876-021-01616-9 (2021)

Reviewer’s report
Title: 
Clinical and endoscopic features of aorto-duodenal fistula resulting in its
definitive diagnosis: an observational study
Version: 
2 
Date: 
22 Dec 2020
Reviewer's report:
The changes and corrections have significantly improved the study.
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