| http://www.w3.org/ns/prov#value | - One study, published by the National Center for Complementary and Alternative Medicine in May, found that more than 2.1 million American adults had used acupuncture at least once in the last 12 months; more than 3 million had tried tai chi or qigong; and more than 38 million used non-vitamin, non-mineral, natural products" such as herbs.
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