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"When a patient asks for advice regarding the use of a particular herb, how should a physician respond? Similarly, how does a physician determine if a patient's symptoms are caused by a "remedy"? This review attempts to answer these questions by investigating pertinent definitions, the history of herbs in medicine, epidemiology and prevalence of herbal use, and relevant psychosocial issues." Lisa Corbin Winslow, MD; David J. Kroll, PhD , Archives of Internal Medicine, 1998;158:2192-2199.