Review for 10.1186/s12876-021-01715-7 (2021)

Reviewer’s report
Title: 
Very-Low-Dose Aspirin and Surveillance Colonoscopy is Cost-effective
in Secondary Prevention of Colorectal Cancer in Individuals with Advanced
Adenomas: Network Meta-analysis and Cost-effectiveness Analysis
Version: 
0 
Date: 
25 Jan 2021
Reviewer's report:
The manuscript is well written and constructed well. The message that "Very-
Low-Dose Aspirin and Surveillance Colonoscopy is Cost-effective in Secondary
Prevention of Colorectal Cancer in Individuals with Advanced Adenomas" is
well illustrated via Network Meta-analysis and Cost-effectiveness Analysis. 
I have only a small question:
Is "ES (miss rate)" in the legends of S Figure 3.4.1 and 3.4.2 unnecessary?
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Is the study design appropriate to answer the research question (including the use
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