title: [Onichoses in the practice of an internist].
authors: O L
authors: OL
authors: Ivanov
authors: K M
authors: KM
authors: Lomonosov
authors: A A
authors: AA
authors: Tsykin
mesh_terms: D003937:Diagnosis, Differential; D018450:Disease Progression; D006801:Humans; D007388:Internal Medicine; D009260:Nail Diseases / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology; D012307:Risk Factors