title: Motor neuron disease in Lehigh county, Pennsylvania: an epidemiologic study.
mesh_terms: D000368:Aged; D005260:Female; D006254:Hawaii; D006801:Humans; D008297:Male; D008875:Middle Aged; D008910:Minnesota; D009046:Motor Neurons; D009468:Neuromuscular Diseases / Q000453:epidemiology*; D010414:Pennsylvania