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
Clinical & PET Studies in the'Extrapyramidal Syndrome'of Dementia of the Alzheimer Type
Arch Neurol 47:1318-1323, Tyrrell,P.J.,et al, 1990
Neurologic Aspects of Boxing
Arch Neurol 44:453-459, Jordan,B.D., 1987