Herbal medicine: a practical guide to safety and quality assurance.

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A placebo-controlled, double-blind, randomized trial of an extract of Ginkgo biloba for dementia. North American EGb Study Group

P L Le Bars · JAMA · 1997 · 605 citations

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Herbal remedies: adverse effects and drug interactions.

Melanie Johns Cupp · PubMed · 1999 · 276 citations

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Contamination of Botanical Dietary Supplements by<i>Digitalis lanata</i>

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A Leading Question

Yitzhak Beigel, Iris Ostfeld, Nili Schoenfeld · New England Journal of Medicine · 1998 · 51 citations

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