8238
Two patients treated for chronic myeloid leukemia with high doses of CCNU ( 1100 mg / m2 and 1240 mg / m2 , respectively ) developed a fatal pulmonary fibrosis .
 fatal pulmonary fibrosis, CCNU
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:
 fatal pulmonary fibrosis, CCNU