An herb for every illness?
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D002986:Clinical Trials as Topic; D003139:Common Cold / Q000188:drug therapy* / Q000517:prevention & control*; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D008517:Phytotherapy; D010936:Plant Extracts / Q000627:therapeutic use; D010946:Plants, Medicinal / Q000627:therapeutic use*; D012107:Research Design; D012109:Research Support as Topic; D012141:Respiratory Tract Infections / Q000188:drug therapy / Q000517:prevention & control; D014481:United States
D010936:Plant Extracts