title: Longitudinal studies of diurnal variations in depression: a sample of 643 patient days.
mesh_terms: D000275:Adjustment Disorders / Q000188:drug therapy; D000328:Adult; D000368:Aged; D001007:Anxiety; D001714:Bipolar Disorder / Q000188:drug therapy; D002940:Circadian Rhythm; D003863:Depression; D004644:Emotions; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010919:Placebos; D011569:Psychiatric Status Rating Scales; D011602:Psychophysiologic Disorders
chemical_list: D010919:Placebos