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Electrocardiographic changes after dipyridamole infusion ( 0 . 568 mg / kg / 4 min ) were studied in 41 patients with coronary artery disease and compared with those after submaximal treadmill exercise by use of the body surface mapping technique .
 Chemical: dipyridamole; Disease: coronary artery 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: dipyridamole; Disease: coronary artery disease