1. Steroid hormone levels in pregnancy and 1 year postpartum using isotope dilution tandem mass spectrometry 
Offie P. Soldin, Ph.D., Tiedong Guo, M.Sc., Elisabete Weiderpass, M.D., Rochelle E. Tractenberg, Ph.D., Leena Hilakivi-Clarke, Ph.D., Steven J. Soldin, Ph.D. 
Fertility and Sterility 
Volume 84, Issue 3, Pages (September 2005)
DOI: /j.fertnstert
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions

2. FIGURE 1 Mean steroid hormone concentrations in pregnancy.
Soldin. Steroids in pregnancy: normal intervals. Fertil Steril 2005.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions

3. FIGURE 2
Ratios steroid hormone concentrations in pregnancy relative to postpartum. P concentrations are presented as ng/mL/10.
Soldin. Steroids in pregnancy: normal intervals. Fertil Steril 2005.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions