Fertility drugs do not increase breast cancer risk, study shows — ScienceDaily
source : http://www.sciencedaily.com/releases/2014/04/140403084245.htm
source : http://www.sciencedaily.com/releases/2014/04/140403084245.htm
source : http://www.foxnews.com/health/2013/07/02/are-your-hormones-making-sick/