title: Insomniacs' perceptions of cognitive versus somatic determinants of sleep disturbance.
mesh_terms: D000328:Adult; D001143:Arousal; D003071:Cognition; D005260:Female; D006801:Humans; D008297:Male; D011602:Psychophysiologic Disorders / Q000523:psychology*; D007319:Sleep Initiation and Maintenance Disorders / Q000523:psychology*