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CONCLUSIONS : QT interval prolongation in methadone maintenance patients hospitalized in a tertiary care center is a frequent finding .
 Disease: QT interval prolongation; Chemical: methadone
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: QT interval prolongation; Chemical: methadone