Review for 10.1186/s12876-019-0948-6 (2019)

Reviewer ’s report  
 
Title: A comparison of the diagnosis of gastroparesis in 4 hour ped iatric gastric emptying studies 
versus 2 hour studies  
 
Version: 1 Date: 05 Dec 2018  
 
Reviewer: Lorenzo Biassoni  
 
Reviewer's report:  
 
I am happy with the changes introduced by the authors. I have only very few minor observation 
regarding some typos and style in g eneral. Once these are fixed I am happy for the manuscript to 
be considered for publication.  
 
Page 9, line 16: "%": I suggest using the word "percentages" rather than the symbol %;  
Page 12, line 7: "emptying" rather than "empty";  
Page 13, line 4: "through"  rather than "thru"  
Page 13, lines 6 -7: "Mostly fats....": Please rephrase this sentence, I am not entirely sure what 
you are trying to say;  
Table 3 and Table 4: GCSI rather than CGSI.  
 
 
 
 
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 manus cript 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  
 
 
 
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, f ees, funding, or salary from an 
organisation that may in any way gain  or lose financial ly from the publication of this 
manuscript, either now or in the future?  
 
2. Do you hold any stocks or shares in an organisation t hat may in any way gain or lose 
financially from the publication of this manuscript, either now or in the fut ure? 
 
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 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?  
 
If you can answer no to all of the above, write 'I declare that I have  no competing interests' 
below. If your reply is yes to any, please give details below.  
 
'I declare that I have no competing interests'  
 
I agree to the open peer review policy of the journal. I understan d that my name will be included 
on my report to the authors and, if the manuscript is acce pted f or 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 Access 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 in cluded as confidential comments 
to the editor s, which will not be publishe d. 
 
I agree to the open peer review policy of the journal