title: Polysomnography in the diagnosis of chronic insomnia.
authors.forename: Q R
authors.initials: QR
authors.lastname: Regestein
mesh_terms: D002908:Chronic Disease; D004569:Electroencephalography; D006801:Humans; D008991:Monitoring, Physiologic; D012890:Sleep / Q000502:physiology; D007319:Sleep Initiation and Maintenance Disorders / Q000175:diagnosis*