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We report a case of a patient with rheumatoid arthritis treated with low - dose methotrexate ( 15 mg / week ) who developed infection with both M. tuberculosis and M. chelonae after the revision of a prosthetic hip .
 adverse effect: infection with both M. tuberculosis and M. chelonae, methotrexate
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 adverse effect: infection with both M. tuberculosis and M. chelonae, methotrexate