2524
A 67 - year - old patient , with primary polymyositis and without previous evidence of liver disease , developed clinical and biochemical features of severe cholestasis 3 months after initiation of azathioprine therapy .
 Disease: polymyositis; Disease: liver disease; Disease: cholestasis; Chemical: azathioprine
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: polymyositis; Disease: liver disease; Disease: cholestasis; Chemical: azathioprine