Reviewer ’s report  
 
Title:  Aldehyde dehydrogenase serves as a biomarker for worse survival profiles in ovarian 
cancer patients: an updated meta -analysis  
 
Version: 1 Date: 12 Nov 2018 
 
Reviewer:  Kedra  Wallace  
 
Reviewer’s report:  
 
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Are the methods appropriate and well described?  
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Yes 
 
Does the work include the necessary controls?  
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Yes 
 
Are the conclusions drawn adequately supported by th e data shown?  
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Yes 
 
Are you able to assess any statistics in the manuscript or would you recommend an 
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I am able to assess the sta tistics  
 
Quality of written English  
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Acceptable  
 
Declaration of competing interests  
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