17
The frequency of the G - allele differed significantly between responders ( 70 % ) and nonresponders ( 56 % ) at 6 months ( P = 0 . 05 ) using the HAM - A scale as outcome measure .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None