| http://www.w3.org/ns/prov#value | - In the United States and increasingly in other countries including Ireland, England and Poland, increasing numbers of family physicians and obstetrician-gynecologists recognize that many hormone-based contraceptive pharmaceuticals and devices such as IUDs have mechanisms of action that have the potential to interrupt a pregnancy in embryonic development (see Postfertilization Effects of Oral Contr
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