Epidemiology of chronic fatigue syndrome.
Levine
P H
PH
Viral Epidemiology Branch, National Cancer Institute, Bethesda, Maryland 20892.
D016000:Cluster Analysis; D004196:Disease Outbreaks; D015981:Epidemiologic Factors; D015673:Fatigue Syndrome, Chronic / Q000175:diagnosis / Q000453:epidemiology*; D006801:Humans