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The level of the 137 - bp PCR product containing the insertion was lowest in two patients who showed a later onset of cerebellar ataxia .
 Disease: cerebellar ataxia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: cerebellar ataxia