Review for 10.1186/s12876-018-0921-9 (2019)

Reviewer ’s report  
 
Title: Prospective comparison of slow -pull and standard s uction techniques of endoscopic 
ultrasound -guided fine needle aspiration in the diagnosis of solid pancreatic cancer  
 
Version: 0 Date: 27 Dec 2017  
 
Reviewer: David N. Lewin  
 
Reviewer's report:  
 
Please include all comments for the authors in this box rather than uploading your report as an 
attachment. Please only upload as attachments annotated versions of manuscripts, graphs, 
supporting materials or other aspects of your report which c annot be included in a text format.  
 
 
Please overwrite this text when adding your comments to the authors.  
 
 
Please explain 2 -2 punctures: Was the SP and SS randomly assigned to be performed first, or 
was one always done first (my bias would be that the first  pass should have the least amount of 
blood and unless this was randomized this may alter the results).  
 
 
I do not understand Figure 2 venn diagram  
 
 
 
 
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 comme nts 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 a n 
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 indicat e the quality of language in the manuscript:  
 
Acceptable  
 
 
 
Declaration of competing interests  
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holds or has applied for patents relating to the c ontent 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.  
 
I declare that I have no competing interests  
 
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I agree to the open peer review policy of the journal