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Meta-analysis: melatonin for the treatment of primary sleep disorders
Ferracioli-Oda E, Qawasmi A, Bloch MH · PLoS ONE 8(5):e63773 · 2013
Key finding
Melatonin shortens sleep onset ~7 min and adds ~8 min of sleep — real but small effects; it is a timing signal, not a sedative.
Citation
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