This is a nice review, but should add the word review to the title, so the reader is not tricked into thinking there is new data to be presented here.  This is a perfect forum for presenting such data and there is no explanation for why the author did not include his unpublished data here.

• competing interests: no
• Invited by the author to make a review on this article? :
• Experience and credentials in the specific area of science:

  30 years @ womens health  practitioner

• Publications in the same or a related area of science: No
  
• References: None