Effectiveness and safety of acupuncture for insomnia: Protocol for a systematic review.

Medicine (Baltimore) · 2019 · PMC6855569 · PMID 31702639

Europe PMC DOI

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may be significantno p-value reported

Secondly, the heterogeneity of acupuncture may be significant due to the different methods of acupuncture.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.