7229
An obese patient , not diabetic , treated with metformin for some weeks , was referred to us with severe inferior digestive hemorrhage , diagnosed with Meckel 's diverticulum .
 severe inferior digestive hemorrhage, 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:
 severe inferior digestive hemorrhage, metformin