Light treatment of mood disorders.

Dialogues Clin Neurosci · 2003 · PMC3181775 · PMID 22033495

Europe PMC DOI

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may be significantno p-value reported

Side effects are minimal, with the exception of the induction of mania in bipolar patients, and there may be significant placebo effects.

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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.