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The patients of the study and control group ( without digoxin ) were of similar cardiac functional capacity and age ( 25 - 40 years ) and were randomly selected from the rheumatic heart disease patients .
 Chemical: digoxin; Disease: rheumatic 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: digoxin; Disease: rheumatic heart disease