1925
In patients without cocaine use , coronary computerized tomography angiography ( CTA ) has been shown to be useful for identifying a group of patients at low risk for cardiac events who can be safely discharged .
 Chemical: cocaine
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: cocaine