title: Melatonin and fragmented sleep patterns.
authors: B A
authors: BA
authors: Middleton
authors: B M
authors: BM
authors: Stone
authors: J
authors: J
authors: Arendt
mesh_terms: D000328:Adult; D018592:Cross-Over Studies; D004311:Double-Blind Method; D004780:Environment, Controlled; D006801:Humans; D008297:Male; D008550:Melatonin / Q000009:adverse effects*; D012890:Sleep / Q000187:drug effects*
chemical_list: D008550:Melatonin