1896
We hypothesized that propofol infusion pain might be prevented by infusing remifentanil before starting the propofol infusion in a clinical setting where target - controlled infusions ( TCI ) of both drugs were used .
 Chemical: propofol; Disease: pain; Chemical: remifentanil; Chemical: propofol
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: propofol; Disease: pain; Chemical: remifentanil; Chemical: propofol