1. Evaluation of basal estradiol levels in assisted reproductive technology cycles2 
John L Frattarelli, M.D., Paul A Bergh, M.D., Michael R Drews, M.D., Fady I Sharara, M.D., Richard T Scott, M.D. 
Fertility and Sterility 
Volume 74, Issue 3, Pages (September 2000)
DOI: /S (00)

2. Figure 1
Overall pregnancy and cancellation rates for each basal E2 range. ∗Contingency table analysis, P<.01.
Frattarelli. Basal estradiol levels in ART cycles. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (00) )