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Intrauterine devices actually lie under a contraceptive class, and perhaps they are highest efficacy and least invasive form of the birth control. Rumors continue that there was a gold ring in the uterus of Cleopatra and that allows her to get prevented from the pregnancy and offer her a healthy and active love life. And it is also said that the camel drivers in the same era use to put small rocks in the uteruses of their camels for preventing their camels from pregnancy on the long roads they’ve traveled. Maybe they are nothing more than pretty good stories, but ...