Reviewer ’s report  
 
Title:  Association of breastfeeding and postmenopausal osteoporosis in Chinese women: a 
community -based retrospective study  
 
Version: 0 Date: 31 May 2019 
 
Reviewer:  Mariella  Lilue  
 
Reviewer’s report:  
 
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Are the methods appropriate and well descri bed?  
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Yes 
 
Does the work include the necessary controls?  
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Yes 
 
Are the conclusions drawn adequately  supported by the data shown?  
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Yes 
 
Are you able to assess any statistics in the manuscript or would you recommend an 
additional statistical review?  
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I am able to assess the statistics  
 
Quality of written English  
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Acceptable  
 
Declaration of competing  interests  
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