Review for 10.1186/s12876-019-0953-9 (2019)

Reviewer ’s report  
 
Title: ERCP -guided cholangiopancreatoscopy using a single -opera tor system. An appraisal of its 
clinical value based on an extensiv e single institution experience  
 
Version: 0 Date: 30 Aug 2017  
 
Reviewer: Brian C. Brauer  
 
Reviewer' s report:  
 
Nice description of a large number of patients.  I find the 4 point scale very simplistic.  The 4 
point scale is very subjective, and can easily be biased toward CP being clinically useful. I would 
suggest a detailed description o f findings, correlated with subsequent findings/interventions, and 
if possible a multivariate analysis  of which findings were suggestive of a subsequent diagnosis, 
i.e. cholangiocarcinoma, mucinous adenocarcinoma, or benign finding.  
 
 
 
Are the methods appropriate and well described?  
If not, please specify what is required in your comments to the authors.  
 
Yes 
 
Does the work include the necessary controls?  
If not, please specify which controls are required in your comments  to the authors.  
 
No 
 
Are the conclusions drawn adequately supported by the data shown?  
If not, please explain in your comments to the authors.  
 
No 
 
Are you able to assess any statistics in the manus cript or would you recommend an 
additional statistical review?  
If an additional statistical review is recommended, please speci fy what aspects require further 
assessment in your comments to the editors.  
 
I am able to assess  the statistics  
 
Quality of written English  
Please indicate the qua lity of language in the manuscript:  
 
Acceptable  
 
Declaration of competing interests  
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holds or has  applied for patents relating to the content of the manuscript?  
 
5. Do you have any other financial competing interests?  
 
6. Do you have any non -financial competing interests in relation to this paper?  
 
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below . If your reply is yes to any, please give details below.  
 
4. Consultant for Boston Scientific  
 
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