title: Concomitant sleep disorders--a reason for in-clinic sleep studies in patients with obstructive sleep apnea?
authors.forename: Nikolaus C
authors.initials: NC
authors.lastname: Netzer
mesh_terms: D006801:Humans; D017286:Polysomnography; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis* / Q000453:epidemiology*; D012893:Sleep Wake Disorders / Q000175:diagnosis* / Q000453:epidemiology*