The Risk-Benefit Profile of Commonly Used Herbal Therapies: Ginkgo, St. John's Wort, Genseng, Echinacea, Saw Palmetto, and Kava
Ann Int Med 136:42-53, Ernst,E., 2002
Acute, Drug-Induced, Life-Threatening Neurological Syndromes
The Neurologist 4:196-210, Richard,I.H., 1998