http://articles.mercola.com/sites/articles/archive/2000/10/08/fertility-treatment.aspxAccording to a survey by the World Congress on Fertility and Sterility, couples often resort prematurely to reproductive technologies such as in vitro fertilization to become pregnant, without first understanding their cycles and when they are most likelyenCommunityServer 2008.5 SP1 (Build: 31106.3070)