4318
Every patient was screened for testosterone and 451 were screened for prolactin on the basis of low sexual desire , gynecomastia or testosterone less than 4 ng . / ml .
 testosterone, low sexual desire, gynecomastia, testosterone
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 testosterone, low sexual desire, gynecomastia, testosterone