11878
After 1 week of nefazodone therapy the patient experienced headache , confusion , and " gray areas " in her vision , without abnormal ophthalmologic findings .
 confusion, nefazodone; gray areas, nefazodone; headache, nefazodone
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:
 confusion, nefazodone; gray areas, nefazodone; headache, nefazodone