1. Value of the serum estradiol level on the day of human chorionic gonadotropin injection and on the day after in predicting the outcome in natural in vitro fertilization/intracytoplasmic sperm injection cycles 
Milan Reljič, Ph.D., Veljko Vlaisavljević, Ph.D., Vida Gavrić, Borut Kovačič, Ph.D., Mojca Čižek-Sajko, B.Sc. 
Fertility and Sterility 
Volume 75, Issue 3, Pages (March 2001)
DOI: /S (00)

2. Figure 1
Probability of pregnancy in relation to the E2 ratio in cycles without premature ovulation.
Reljič. E2 pattern predicts natural IVF cycle outcome. Fertil Steril 2001.
Fertility and Sterility  , DOI: ( /S (00) )

3. Figure 2
Receiver operator characteristic curve for determining pregnancy on the basis of the E2 ratio. A = cutoff 0.9, B = cutoff 1, C = cutoff 1.1, D = cutoff 1.2, E = cutoff 1.3.
Reljič. E2 pattern predicts natural IVF cycle outcome. Fertil Steril 2001.
Fertility and Sterility  , DOI: ( /S (00) )