13292
A cross - sectional study was performed with 2 , 057 consecutive primary hypothyroidism patients on levothyroxine ( LT4 ) replacement at four referral centers in Brazil ( median age = 53 ; 25th percentile = 43 ; 75th percentile = 61 years ) .
 Chemical: levothyroxine; Chemical: LT4
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: levothyroxine; Chemical: LT4