Review for 10.1186/s12876-019-1148-0 (2019)

Reviewer’ s report
Title: A novel technique for repositioning a nasobiliary catheter from the mouth to nostril in
Endoscopic Retrograde Cholangiopancreatography
Version: 1Date: 15 Oct 2019
Reviewer: Hirofumi Kogure
Reviewer's report:
The authors evaluated the usefulness of the new loop-device for facilitating the repositioning of an
ENBD catheter from the mouth to nostril. However, this paper has little clinical significance. Ithink that the wire loop technique reported by Hamano et al. is enough for the repositioning of anENBD catheter. In addition, the wire loop technique has the advantage of not incurring extra costs.The authors have to clarify whether this new device is reusable and how to sterilize.
Are the methods appropriate and well described?
If not, please specify what is required in your comments to the authors.
YesDoes the work include the necessary controls?
If not, please specify which controls are required in your comments to the authors.
Yes
Are the conclusions drawn adequately supported by the data shown?
If not, please explain in your comments to the authors.
YesAre you able to assess any statistics in the manuscript or would you recommend an
additional statistical review?If an additional statistical review is recommended, please specify what aspects require furtherassessment in your comments to the editors.
I am able to assess the statisticsQuality of written English
Please indicate the quality of language in the manuscript:
Needs some language corrections before being publishedDeclaration of competing interests
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