Review for 10.1186/s12876-019-1017-x (2019)

Reviewer ’s report  
 
Title: The efficacy of limited endoscopic sphincterotomy plus endoscopic papillary large balloon 
dilation for removal of large bile duct stones  
 
Version: 2 Date: 09 Mar 2019  
 
Reviewer: Ioannis S.  Papanikolaou  
 
Reviewer's report:  
 
I am satisfied by the response of the authors to my remarks. Although (as reviewer 2 pointed out) 
there has been ex tensive data published regarding this topic, I believe there is still room for 
additional data. Although retrospective, this paper has a good number of patients and therefore 
could add some new aspects to the existing knowledge. The limitations of these st udies have now 
been thoroughly highlighted and therefore publication is possible after one more "brushing" of 
the language.  
Are the methods appropriate and well des cribed?  
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 dr awn 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:  
 
Needs some language corrections before being published  
 
  
Declaration of competing interests  
Please complete a declaration of competing interests, considering the following questions:  
 
1. Have you in the past five years received reimbursements, fees, funding, or salary from an  
organisat ion that may in any way gain or lose financially from the publication of this  
manuscript, either now or in the future?  
 
2. Do you hold any stocks or shares in an organisation that may in any way gain or lose  
financially from the publication of this manuscri pt, either now or in the future?  
 
3. Do you hold or are you currently applying for any patents relating to the content of the  
manuscript?  
 
4. Have you received reimbursements, fees, funding, or salary from an organization that 
holds  or has applied for patent s 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?  
 
If you can answer no to all of the above, write 'I declare that I have no c ompeting interests' 
below.  If your reply is yes to any, please give details below.  
 
I have done consultation for Boston Scientific twice in the previous year.  
 
I agree to the open peer review policy of the journal. I understand that my name will be included  
on my report to the authors and, if the manuscript is accepted for publication, my named report  
including any attachments I upload will be posted on the website along with the authors'  
responses. I agree for my report to be made available under an Open Acc ess Creative Commons  
CC-BY license ( http://creativecommons.org/licenses/by/4.0/ ). I understand that any comments  
which I do not wish to be included in my named report can be included as confidential comments  
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal