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There was a significant decrease in the time to onset of arrhythmia as compared with control nonprogesterone - treated rats ( 6 . 2 + / - 1 . 3 vs . 30 . 8 + / - 2 . 5 min , mean + / - SE ) .
 Disease: arrhythmia
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: arrhythmia