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Our patient started to have symptoms of RLS only after he had been treated with mirtazapine , and his RLS symptoms resolved completely upon discontinuation of his mirtazapine .
 Disease: RLS; Chemical: mirtazapine; Disease: RLS; Chemical: mirtazapine
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: RLS; Chemical: mirtazapine; Disease: RLS; Chemical: mirtazapine