2320
We recommended periodic examination of the serum proteins in patients receiving diphenylhydantoin in order to detect development of monoclonal gammopathy .
 monoclonal gammopathy, diphenylhydantoin
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:
 monoclonal gammopathy, diphenylhydantoin