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The aim of the present study was to determine the efficacy of glyceryl trinitrate ( GTN ) , an NO donor , in the resolution of primary dysmenorrhea in comparison with diclofenac ( DCF ) .
 Chemical: glyceryl trinitrate; Chemical: GTN; Chemical: NO; Disease: dysmenorrhea; Chemical: diclofenac; Chemical: DCF
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: glyceryl trinitrate; Chemical: GTN; Chemical: NO; Disease: dysmenorrhea; Chemical: diclofenac; Chemical: DCF