National Center for Complementary and Alternative Medicine, National Institutes of Health, 35 Convent Dr, Room 1C-1012, Bethesda, MD 20892, USA *Tel.: +1 (301) 496 2219; fax: +1 (301) 480 0772. E-mail: [email protected] Submitted April 18, 2013; revised and accepted June 10, 2013.
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Lucie A. Low (2013) studied this question.
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