Valerian for insomnia: a systematic review of randomized clinical trials
Department of Complementary Medicine, School of Postgraduate Medicine and Health Sciences, University of Exeter, 25 Victoria Park Road, Exeter EX2 4NT, UK
Received 15 October 1999; received in revised form 26 November 1999; accepted 26 November 1999.
PII: S1389-9457(99)00015-5
© 2000 Elsevier Science B.V. All rights reserved.
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