http://ksun_scher.livejournal.com/ ([identity profile] ksun_scher.livejournal.com) wrote in [personal profile] ksun_scher 2014-10-05 08:33 pm (UTC)

вот такое нашла в British Dental Journal http://www.nature.com/bdj/journal/v197/n8/full/4811790a.html
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