4666
Both CSSEPs as central and NMPs as peripheral correlates of pain were obtained in response to the CO2 stimuli .
 Disease: pain; Chemical: CO2
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: pain; Chemical: CO2