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These in vivo markers of kidney dysfunction and their correction by metformin were complemented by in vitro studies of mitochondrial function .
 Disease: kidney dysfunction; Chemical: metformin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: kidney dysfunction; Chemical: metformin