1770
There have been many reports of probable lithium - induced organic brain syndromes occurring when serum lithium levels are within or close to the therapeutic range .
 organic brain syndromes, lithium
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:
 organic brain syndromes, lithium