Review for 10.1186/s12876-020-01577-5 (2021)

Reviewer’s report
Title: 
Alterations in short-chain fatty acids and serotonin in irritable bowel
syndrome: a systematic review and meta-analysis
Version: 
4 
Date: 
28 Sep 2020
Reviewer's report:
The authors answered the comments / questions formulated 
by the 
referees
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