title: Objective measures are useful in subtyping chronic insomnia.
authors.forename: Alexandros N
authors.initials: AN
authors.lastname: Vgontzas
authors.forename: Julio
authors.initials: J
authors.lastname: Fernandez-Mendoza
mesh_terms: D001143:Arousal / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology*; D007319:Sleep Initiation and Maintenance Disorders / Q000503:physiopathology*
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