1. Epidemiology of male and female reproductive disorders and impact on fertility regulation and population growth 
Kurt T. Barnhart, M.D., M.S.C.E. 
Fertility and Sterility 
Volume 95, Issue 7, Pages (June 2011)
DOI: /j.fertnstert
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Artificial construct to demonstrate “reproductive” spectrum contrast: male vs. female healthy vs. “unhealthy.”
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2 Journey from puberty to menopause is not linear.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions