Review for 10.1186/s12876-020-01428-3 (2020)

Reviewer ’s report  
 
Title: Pancreatic duct guidewire placement for biliary cannulation as a risk factor for stone residue 
after endoscopic transpapillary stone removal  
 
Version: 1 Date: 05 Aug 2020  
 
Reviewer: Yoshihide  Kanno  
 
Reviewer's report:  
 
The authors have promptly and sufficiently responded to my comments.  
 
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Is the study design appropriate t o answer the research question (i ncluding the use of appropriate 
controls), and are the conclusions supported by the evidence presented?  
 
Yes 
 
Are the methods sufficiently described to allow the study to be repeated?  
 
Yes 
 
Is the use of statistics and treatmen t of uncertainties appropriate?  
 
Yes 
 
Is the presentation of the work clear?  
 
Yes 
 
Are the images in this manuscript (including electrophoretic gel s and blots) free from apparent 
manipulation?  
 
Yes