2463
The 80 patients in the study consecutively received either iopromide ( group A , n = 40 ) or iohexol ( group B , n = 40 ) .
 Chemical: iopromide; Chemical: iohexol
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: iopromide; Chemical: iohexol