2648
The reported case represents an unusual association between medication with the proton pump inhibitor lansoprazole and the development of collagenous colitis suggesting the importance of evaluation of drug use in patients with microscopic colitis .
 collagenous colitis, lansoprazole
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:
 collagenous colitis, lansoprazole