Review for 10.1186/s12876-019-1093-y (2019)

Reviewer’s report
Title: A novel approach with holmium laser ablation for endoscopic management of intrahepatic biliary
stricture
Version: 0 Date: 23 Aug 2019
Reviewer: Rafael Bergesch D ’Incao
Reviewer's report:
Dear author,  
the current work seemed very interesting because it demonstrates, in a small and heterogeneous group
of patients, a new therapeutic possibility for choledochal stenosis associated with litiasis, with little
morbidity. Given the morbidity and mortality associated with biliary surgery, that minimally invasive
procedures should always be preferred. 
However, I believe that to be validated the technique needs to be tested in a larger number of patients,
preferably prospectively, with homogeneous groups, in addition to etiologies of identified stenosis
(malignant, postoperative, etc ...), besides location, number of stenosis and approach route. In addition,
they should have a prolonged follow-up to check for late complications.  
The language also seemed appropriate to me.  
The article seems to me suitable for publication. 
Best Regards,  
Rafael Bergesch D'Incao
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.
Yes
Are the conclusions drawn adequately supported by the data shown?
If not, please explain in your comments to the authors.
Yes
Are 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  further
assessment in your comments to the editors.
I am able to assess the statistics
Quality of written English
Please indicate the quality of language in the manuscript:
Acceptable
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