1. Suppression of estrogen-withdrawal headache with extended transdermal contraception 
Katherine D. LaGuardia, M.D., M.P.H., Alan C. Fisher, Dr.P.H., James D. Bainbridge, B.A., John M. LoCoco, M.B.A., Andrew J. Friedman, M.D. 
Fertility and Sterility 
Volume 83, Issue 6, Pages (June 2005)
DOI: /j.fertnstert
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions

2. FIGURE 1
Mean headache days by week with use of the norelgestromin/ethinyl estradiol transdermal system in either an extended (NGMN/EE Extended) or cyclic (NGMN/EE Cyclic) regimen.
LaGuardia. Suppression of headache by extended transdermal contraception. Fertil Steril 2005.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions