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The ones that we have on the market now are very, very safe; they are very different from the ones that came out in the ‘80s, [like] the DalkonShield that did have a high risk of pelvic inflammatory disease, one of the main differences was that it had a braded filament--a piece of string that hangs into the vagina-- and bacteria lived in the crevices in the string, which increased the risk of getting pelvic inflammatory disease, which can lead to scarring and blocked fallopian tubes. This caused a scare and caused companies to pull all IUDs [off the shelves] except for the copper IUD. But today, the string is much smoother so the bacteria can’t cling on as easily.