13600
Association between bisphenol A and abnormal free thyroxine level in men .
 Chemical: bisphenol A; Chemical: thyroxine
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: bisphenol A; Chemical: thyroxine