title: Toward a new definition of chronic fatigue syndrome.
authors: H
authors: H
authors: Robertson-Ritchie
mesh_terms: D003430:Cross-Sectional Studies; D003937:Diagnosis, Differential; D015673:Fatigue Syndrome, Chronic / Q000175:diagnosis* / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D009135:Muscular Diseases / Q000175:diagnosis / Q000453:epidemiology; D018570:Risk Assessment; D006113:United Kingdom / Q000453:epidemiology