7784
OBJECTIVE : To describe a case of cefazolin - induced leukopenia in a critically ill patient who developed this adverse reaction upon rechallenge with cefoxitin .
 leukopenia, cefazolin
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:
 leukopenia, cefazolin