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Erythema nodosum associated with all - trans - retinoic acid ( ATRA ) for acute promyelocytic leukemia ( APL ) is very rare .
 Disease: Erythema nodosum; Chemical: all - trans - retinoic acid; Chemical: ATRA; Disease: acute promyelocytic leukemia; Disease: APL
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: Erythema nodosum; Chemical: all - trans - retinoic acid; Chemical: ATRA; Disease: acute promyelocytic leukemia; Disease: APL