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: 
1 
Date: 
27 Feb 2022
Reviewer's report:
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I congratulate with 
the authors for this study. The topic is of great interest mainly
because it is a homogenous group of patients diagnosed with rectal cancer.
The authors have fully responded to requests from previous reviewers which are
the same requests that I would have made myself.
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Is the study design appropriate to answer the research question (including the use
of appropriate controls), and are the conclusions supported by the evidence
presented?
Yes
Are the methods sufficiently described to allow the study to be repeated?
Yes
Is the use of statistics and treatment of uncertainties appropriate?
Yes
Is the presentation of the work clear?
Yes
Are the images in this manuscript (including electrophoretic gels and blots) free
from apparent manipulation?
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