2989
After a two - month interruption of interferon administration , natural interferon alpha was given but followed by another episode of the same neurological manifestations .
 neurological manifestations, interferon alpha
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:
 neurological manifestations, interferon alpha