Review for 10.1186/s12876-020-01354-4 (2020)

Reviewer’s report
Title: The diffuse-type gastric cancer epidemiology enigma
Version: 1 Date: 25 Jan 2020
Reviewer: p Rawla
Reviewer's report:
General:  The  authors  have  identified  an  interesting  debate  on  "The  diffuse-type  gastric  cancer
epidemiology enigma" an interesting topic. 
The main strengths of this study are that: 
Some concerns which will need to be addressed are:
The title is appropriate. 
Abstract: looks good
Epidemiology:
Line 51-54: Authors mention about epidemiology of GC. Please refer the latest epidemiology of gastric
cancer  https://www.ncbi.nlm.nih.gov/pubmed/30944675  and  please  mention  some  numbers  incl
incidence/mortality.
Authors mention the differences between GAC intestinal and diffuse type
I would recommend that the authors mention this in a table format (atleast the important differences) so
it will easy for readers to differentiate between these two who do not wwant to go through the whole
manuscript
Survival section should be in the epidemiology or below it. 
Please arrange the subsections appropriately so that proper flow of manuscript is maintained when
reading
Overall a well conducted debate.
Are the methods appropriate and well described?
If not, please specify what is required in your comments to the authors.
Unable to assess
Does the work include the necessary controls?
If not, please specify which controls are required in your comments to the authors.
Unable to assess
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.
Not relevant to this manuscript
Quality of written English
Please indicate the quality of language in the manuscript:
Acceptable
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