1. Progesterone level and progesterone/estradiol ratio on the day of hCG administration: detrimental cutoff levels and new treatment strategy 
Eman A. Elgindy, M.D. 
Fertility and Sterility 
Volume 95, Issue 5, Pages (April 2011)
DOI: /j.fertnstert
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Receiver operating characteristic (ROC) curve for defining optimal detrimental cutoff value for P on hCG day.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Receiver operating characteristic (ROC) curve for defining optimal detrimental cutoff value for P/E2 ratio on hCG day.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions