Fig. 1From: Reproducibility and clinical significance of pre-ovulatory serum progesterone level and progesterone/estradiol ratio on the day of human chorionic gonadotropin administration in infertile women undergoing repeated in vitro fertilization cyclesBox and whiskers plots depicting distribution of pre-ovulatory serum progesterone concentration and P/E2 ratio on the day of hCG administration across 2 ~ 4 IVF cycles in each group of patientsBack to article page