Assertion: bulbar onset als | /r/HasAspect | median survival of 2.0 years
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Source sentences:
text: It is associated with a worse prognosis than spinal-onset ALS; a population-based study found that bulbar-onset ALS has a median survival of 2.0 years and a 10-year survival rate of 3%, while spinal-onset ALS has a median survival of 2.6 years and a 10-year survival rate of 13%.