1897
A prospective , randomized , double - blind , placebo - controlled trial was performed to determine the effect - site concentration ( Ce ) of remifentanil to prevent the pain without producing complications .
 Chemical: remifentanil; 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: remifentanil; Disease: pain