1. Elevated serum progesterone-to-estradiol ratio during gonadotropin stimulation for intrauterine insemination or in vitro fertilization is not associated with diminished ovarian reserve 
Glen E Hofmann, M.D., Ph.D., Jane Khoury, M.S., Chad Michener, M.D. 
Fertility and Sterility 
Volume 78, Issue 1, Pages (July 2002)
DOI: /S (02)03162-X

2. FIGURE 1
Pregnancy rates in the IUI and IVF groups as a function of the P/E2 ratio. Pregnancy rates did not differ between groups on the basis of the ratio.
Hofmann. PE2 ratio and diminished ovarian reserve. Fertil Steril 2002.
Fertility and Sterility  , 47-50DOI: ( /S (02)03162-X)