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Tramadol is a weak opioid with effects on adrenergic and serotonergic neurotransmission that is used to treat cancer pain and chronic non malignant pain .
 Chemical: Tramadol; Disease: cancer; Disease: pain; Disease: pain
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: Tramadol; Disease: cancer; Disease: pain; Disease: pain