Reviewer’s report
Title: 
The Association of Osteoporosis Knowledge and Beliefs with Preventive
Behaviors in Postmenopausal Breast Cancer Survivors
Version: 
0 
Date: 
02 May 2021
Reviewer's report:
This manuscript reported the importance of osteoporosis knowledge for PBCS.
This clinical question is important and these results are clinically useful for
PBCS received adjuvant AI treatment. I think that this report has enough value to
be accepted to this journal. However some minor revisions were needed.
minor points.
1. How did you decide the sample size (n=30)? 
2. Why did you include the PBCS without AI? Clinically, breast cancer patients
got the knowledge about adverse events of AI including osteoporosis, when they
started AI. 
3. The authors should add the pathological information (ER, PgR and HER2) of
PBCS. Didn't all patients have recurrence at this research?
4. The authors should discuss about efficacy of exercise for PBCS. I think that
appropriate exercise is difficult for elderly PBCS. 
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Is the study design appropriate to answer the research question (including the use
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