I wish they would distinguish whether there is a difference depending on whether one is HER2 or not, but although this one doesn't do that, here is a study that came out today for you all to consider, given that the side effects of the AI's can be detrimental to bone and can be difficult to handle.
http://www.fccc.edu/news/2005/Study-...0-17-2005.html
AlaskaAngel