Nair, N P Circadian rhythms and psychiatry. [electronic resource] - The British journal of psychiatry : the journal of mental science Nov 1984 - 557-8 p. digital Publication Type: Letter ISSN: 0007-1250 Standard No.: 10.1192/bjp.145.5.557 doi Subjects--Topical Terms: Circadian RhythmDepressive Disorder--bloodHumansMelatonin--blood