| http://www.w3.org/ns/prov#value | - WEDNESDAY, May 23 (HealthDay News) -- Long-acting reversible methods of contraception such as intrauterine devices (IUDs) or implants are more effective for preventing unintended pregnancy than oral contraceptive pills, transdermal patches, or contraceptive vaginal rings, regardless of the user's age, according to a study published in the May 24 issue of the New England Journal of Medicine.
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