8499
Retinal abnormalities , including retinal hemorrhage and " cotton - wool " spots , often occur within the first 8 weeks in the course of interferon therapy in patients with chronic hepatitis C .
 " cotton - wool " spots, interferon; Retinal abnormalities, interferon; retinal hemorrhage, interferon
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:
 " cotton - wool " spots, interferon; Retinal abnormalities, interferon; retinal hemorrhage, interferon