Review for 10.1186/s12876-020-01583-7 (2021)

Reviewer’s report
Title: 
Effectiveness of introducing a 20-gauge core biopsy needle with a core
trap in EUS-FNA/B for diagnosing pancreatic cancer
Version: 
0 
Date: 
28 Sep 2020
Reviewer's report:
Consider retrospective-prospective study or RCT could be better then only
retrospective study. If there is such data, please do consider include in your
study.
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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?
Yes