2629
CONCLUSIONS : The increasing prevalence of Type 2 diabetes and its treatment with metformin might result in more cases of lactic acidosis .
 lactic acidosis, metformin
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 lactic acidosis, metformin