1197
QTc length was weakly but significantly associated with methadone daily dose ( Spearman rank correlation coefficient , 0 . 20 ; P < . 01 ) .
 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:
 Chemical: methadone