30308
Among never - smokers , carriers of one , and those of two or more high - risk GSTM1 , GSTP1 or GSTA1 genotypes were at a higher risk for NAFLD than those who were not carriers [ odds ratio ( 95 % confidence interval ) : 2 . 6 ( 1 . 1 - 5 . 9 ) and 3 . 3 ( 1 . 3 - 8 . 1 ) , respectively ] , and the risk was further increased among current - smokers [ 4 . 6 ( 1 . 6 - 13 . 0 ) and 5 . 4 ( 1 . 2 - 23 . 7 ) , respectively ] .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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