Review for 10.1186/s12876-022-02250-9 (2022)

Reviewer’s report
Title: 
Simultaneous or staged resection for synchronous liver metastasis and
primary rectal cancer: a propensity score matching analysis
Version: 
0 
Date: 
30 Nov 2021
Reviewer's report:
Well done and interesting paper to know ajnd to read about
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Is the study design appropriate to answer the research question (including the use
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