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Chronic pelvic pain, dysmenorrhea, and dyspareunia of women with endometriosis-associated pain symptoms at baseline and at 3 and 6 months of 24/4 regimen 17β-estradiol (1.5 mg) and NOMAC (2.5 mg) combined oral contraceptive (study group) and of women using on-demand NSAIDs (control group).
