Review for 10.1186/s12876-023-02862-9 (2023)

Reviewer’s report
Title: 
A New Classification of Periampullary Diverticulum: Cannulation of
Papilla on the Inner Margins of the Diverticulum (Type IIa) is More Challenging
Version: 
1 
Date: 
12 Jun 2023
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?
Not sure - I am not able to assess the statistics in this study
INTERPRETATION - Is the current interpretation/discussion of the results
reasonable and not overstated?
No - there are minor issues
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?
Probably - with minor revisions
PEER REVIEWER COMMENTS: 
GENERAL COMMENTS: I had the pleasure to review the revised manuscript
entitled "A New Division of Periampullary Diverticulum: Cannulation of Papila
on the Inner Margins of the Diverticulum (Type IIa) is More Challenging". The
manuscript has improved and the authors have addressed the reviewers'
comments. I would like to invite to further revise their manuscript considering
the following points: 
- You have concluded "PAD did not increase the rates of PEP and perforation".
However, in your results you found " Four patients with and one without PAD
experienced perforation". Please revise to address this discrepancy. 
- Declaration: How did you get " consent to participate" in a retrospective study?
- Instead of 
"a new division", should we use "a new classification"?
REQUESTED REVISIONS: 
As above."
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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?
No
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
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