13610
We excluded subjects who tested positive for thyroid autoantibody and then stratified the remaining subjects by gender ; the analysis showed a significantly negative correlation between serum BPA and FT ( 4 ) levels in males ( r = - 0 . 14 , P < 0 . 001 ) .
 Chemical: BPA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: BPA