1. Comparison of contraceptive ring and patch for the treatment of symptomatic endometriosis 
Paolo Vercellini, M.D., Giussy Barbara, M.D., Edgardo Somigliana, M.D., Ph.D., Stefano Bianchi, M.D., Annalisa Abbiati, M.D., Luigi Fedele, M.D. 
Fertility and Sterility 
Volume 93, Issue 7, Pages (May 2010)
DOI: /j.fertnstert
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2. Figure 1
Flow-chart showing recruitment and women's progress through the study.
Fertility and Sterility  , DOI: ( /j.fertnstert )
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3. Figure 2
Bar graphs showing mean pain symptom scores in patients without rectovaginal endometriosis before and after 12 months of treatment according to the preferred system and pain scale: (A) visual analog scale and (B) verbal rating scale. Error bars represent standard deviation. Mean differences correspond to baseline values minus 12-month values. None of the between-group differences is statistically significant (independent Student's t test).
Fertility and Sterility  , DOI: ( /j.fertnstert )
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4. Figure 3
Bar graphs showing mean pain symptom scores in patients with rectovaginal endometriosis before and after 12 months of treatment according to the preferred system and pain scale: (A) visual analog scale and (B) verbal rating scale. Error bars represent standard deviation. Mean differences correspond to baseline values minus 12-month values. ∗The between-group difference in dysmenorrhea variation is statistically significant on both scales (independent Student's t test, P < 0.01).
Fertility and Sterility  , DOI: ( /j.fertnstert )
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