2156
There were 14 of 151 ( 9 . 3 % ) in the DFMO plus sulindac group and 4 of 139 ( 2 . 9 % ) in the placebo group who experienced at least 15 dB hearing reduction from baseline in 2 or more consecutive frequencies across the entire range tested ( P = 0 . 02 ) .
 Chemical: DFMO; Chemical: sulindac
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: DFMO; Chemical: sulindac