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4 “...BACKGROUND: In 2006, the U.S. Preventive Services Task Force (USPSTF) found insufficient evidence...”

5 “...BACKGROUND: In 2006, the U.S. Preventive Services Task Force (USPSTF) found insufficient evidence...”

6 “... for chlamydia in a good-quality trial did not statistically significantly reduce pelvic inflammatory disease...”

7 “... for chlamydia in a good-quality trial did not statistically significantly reduce pelvic inflammatory disease...”

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