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2. Committee on Chinese medicine and Pharmacy, Department of health, Executive Yuan: Commonly used Chinese herb drugs from the committee's website: http://www.ccmp.gov.tw/information/know_detail.asp? no=14&selno=O&relno=548.
3. , , et al., Oriental Materia Medica – A Concise Guide, Modern drug weekly of Taiwan press, Taipei 1985, p. 61.
4. Studies on Rhubarb (Rhei Rhizoma). III. Stilbene Glycosides