14533
These trials have included patients with various mitochondrial disorders , a selected subcategory of mitochondrial disorders , or specific mitochondrial disorders ( Leber hereditary optic neuropathy or mitochondrial encephalopathy , lactic acidosis , and stroke - like episodes ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None