9474
The odds ratio for CHD was 1 . 21 ( 95 % confidence interval , 0 . 84 - 1 . 75 ) given a positive serostatus of specific IgG antibodies after adjustment for covariates .
 IgG
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 IgG