Reviewer ’s report  
 
Title: Contral ateral ovarian endometrioma recurrence after unilateral salpingo -oophorectomy  
 
Version: 0 Date: 25 Feb 2019  
 
Reviewer: Akmal El -Mazny  
 
Reviewer's report:  
 
Thank you for giving me the opportunity to review this interesting study "Contralateral ovarian 
endometrioma recurrence after unilateral salpingo -oophorectomy" . 
However, I have some comments and recommendations:  
 
Comments:  
Title:  
- Is appropriate for the content of the article.  
 
Abstract:  
- Represents a suitable summary of the work.  
 
Article content:  
- The design, methods and analysis of the results are appropri ate for the study.  
 
Conclusions:  
- Are justified on the basis of the results of the study.  
 
Recommendations:  
Introduction:  
- Emphasize the gap of knowledge about postoperative recurrence.  
Methods:  
- Adequately describe inclusion and exclusion criteria.  
 
Results:  
- Do not duplicate, the text should complement the tables and figures.  
 
Discussion:  
- Suggest clinical implications.  
 
References:  
- Stick to the format of the journal.  
 
General:  
- Revise spelling, grammar and format.  
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 author s. 
 
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 an  
additional statistical review?  
If an addi tional 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:  
 
Accep table  
 
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  
organisation that may in any wa y 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 manuscript, either now or in t he 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 patents relating to the cont ent 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 journ al. 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 m y 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 included as confidential comments  
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal