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jrtomhttp://scienceblogs.com/drcharles/2007/06/some_toothpaste_from_china_fou.php
which does a pretty good job of explaining the problem and its history (apparently a similar concern caused the FDA to be created in the first place)
and the FDA report, which lists the toothpaste brands that have been identified to have this additive:
http://www.fda.gov/bbs/topics/NEWS/2007/NEW01646.html
(If this sort of thing keeps happening, I wonder whether China is going to continue to maintain its favorable trade imbalance. First pet food, now this...)
which does a pretty good job of explaining the problem and its history (apparently a similar concern caused the FDA to be created in the first place)
and the FDA report, which lists the toothpaste brands that have been identified to have this additive:
http://www.fda.gov/bbs/topics/NEWS/2007/NEW01646.html
(If this sort of thing keeps happening, I wonder whether China is going to continue to maintain its favorable trade imbalance. First pet food, now this...)