1348
OBJECTIVES : The risk of acute myocardial infarction ( AMI ) with COX - 2 inhibitors may offset their gastrointestinal ( GI ) benefit compared with non - selective ( NS ) non - steroidal anti - inflammatory drugs ( NSAIDs ) .
 Disease: acute myocardial infarction; Disease: AMI; Chemical: COX - 2 inhibitors; Chemical: non - steroidal anti - inflammatory drugs
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: acute myocardial infarction; Disease: AMI; Chemical: COX - 2 inhibitors; Chemical: non - steroidal anti - inflammatory drugs