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After a period of 2 . 5 years on CPA treatment , four patients out of twenty - four were found to be affected by coronary heart disease .
 Chemical: CPA; Disease: coronary heart disease
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: CPA; Disease: coronary heart disease