title: [Beneficial light].
authors.forename: M T
authors.initials: MT
authors.lastname: Hyyppä
mesh_terms: D002940:Circadian Rhythm; D003081:Cold Climate / Q000009:adverse effects; D006801:Humans; D008027:Light; D008550:Melatonin / Q000378:metabolism
chemical_list: D008550:Melatonin
vernacular_title: Terveellinen valo.