1777
CONCLUSIONS : Methadone is associated with QT prolongation and higher reporting of syncope in a population of heroin addicts .
 Chemical: Methadone; Disease: QT prolongation; Disease: syncope; Chemical: heroin
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:
 Chemical: Methadone; Disease: QT prolongation; Disease: syncope; Chemical: heroin