My mother, and the mother of a young woman (R.) close to me, both died of breast cancer. R. has terrible PMS with most of the symptoms being emotional, as I did before taking Xiao Yao Wan for approximately 20 years. (I am also an acupuncturist). And while I understand the connections between PMS (Liver Qi Stagnation) and breast cancer, it is difficult for me to convey to R. the importance of treating her PMS now. So, I'm looking for well written, well documented, footnoted article on this topic. Any help appreciated. Thanks. DC