title: A 'clock for all seasons' in the human brain.
authors.affiliation: Clinical Psychobiology Branch, National Institute of Mental Health, Bethesda, MD 20892-1390, USA.
authors.forename: T A
authors.initials: TA
authors.lastname: Wehr
mesh_terms: D001921:Brain / Q000502:physiology*; D002940:Circadian Rhythm / Q000502:physiology*; D006801:Humans; D008550:Melatonin / Q000378:metabolism; D012621:Seasons; D012890:Sleep / Q000502:physiology
chemical_list: D008550:Melatonin