title: Daytime sleepiness and alertness in patients with Parkinson disease.
authors.affiliation: Rush University Medical Center, Chicago, IL 60612-3833, USA.
authors.forename: Suzanne
authors.initials: S
authors.lastname: Stevens
authors.forename: Cynthia L
authors.initials: CL
authors.lastname: Cormella
authors.forename: Edward J
authors.initials: EJ
authors.lastname: Stepanski
mesh_terms: D000328:Adult; D001143:Arousal / Q000502:physiology*; D002940:Circadian Rhythm; D006970:Disorders of Excessive Somnolence / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D010300:Parkinson Disease / Q000453:epidemiology*; D011446:Prospective Studies; D007319:Sleep Initiation and Maintenance Disorders / Q000453:epidemiology; D012895:Sleep, REM / Q000502:physiology; D011795:Surveys and Questionnaires; D014851:Wakefulness / Q000502:physiology