Reviewer’s report
Title: 
The role of serum 
β
-trophin and endostatin in patients with polycystic
ovary syndrome: are they correlated?
Version: 
1 
Date: 
21 Jan 2021
Reviewer's report:
"PEER REVIEWER ASSESSMENTS: 
OBJECTIVE - Full research articles: is there a clear objective that addresses one
or several testable research questions? (Brief or other article types: is there a
clear objective?)
Yes - there is a clear objective
DESIGN - Is the current approach (including controls and analysis protocols)
appropriate for the objective?
Yes - the approach is appropriate
EXECUTION - Are the experiments and analyses performed with sufficient
technical rigor to allow confidence in the results?
Yes - experiments and analyses were performed appropriately
STATISTICS - Is the use of statistics in the manuscript appropriate?
Yes - appropriate statistical analyses have been used in the study
INTERPRETATION - Is the current interpretation/discussion of the results
reasonable and not overstated?
Yes - the author's interpretation is reasonable
OVERALL MANUSCRIPT POTENTIAL - Has the author addressed your
concerns sufficiently for you to now recommend the work as a technically sound
contribution? If not, can further revisions be made to make the work technically
sound?
Yes - current version is technically sound
PEER REVIEWER COMMENTS: 
GENERAL COMMENTS: I carefully evaluated the revised version of this
manuscript.
Authors have performed the required changes, improving significantly the
quality of the paper."
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Is the study design appropriate to answer the research question (including the use
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Is the use of statistics and treatment of uncertainties appropriate?
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Is the presentation of the work clear?
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Are the images in this manuscript (including electrophoretic gels and blots) free
from apparent manipulation?
Yes