Review for 10.1186/s12876-021-02035-6 (2021)

Reviewer’s report
Title: 
The effects of preoperative intestinal dysbacteriosis on postoperative
recovery in colorectal cancer surgery: a prospective cohort study
Version: 
2 
Date: 
28 Sep 2021
Reviewer's report:
The authors describe a prospective cohort study on effects of preoperative
intestinal dysbacteriosis on postoperative recovery in patients who underwent
colorectal cancer surgery. The authors claimed that this is the first study to
highlight the association between preoperative stool dysbacteriosis and
postoperative infectious outcomes. 
Thank you for the revisions. There are a few more things to consider that can
improve clarity. 
1. In the moderate dysbacteriosis (grade 2) section, please add that the coccus to
bacillus ratio is commonly used as an indicator of gut homeostasis and specify
the normal ranges.
2. On page 12, line 39, "Finally, sum to 53 patients..." should this be "a sum of
53 patients"?
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