539
RESULTS : A 52-year - old woman with Parkinson disease who had taken amantadine for 6 years had bilateral corneal edema for 2 months at baseline .
 bilateral corneal edema, amantadine
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:
 bilateral corneal edema, amantadine