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METHODS : We prospectively evaluated the safety of coronary CTA for low - risk patients who presented to the ED with cocaineassociated chest pain ( self - reported or positive urine test ) .
 Disease: chest pain
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: chest pain