28579
Aim : To explore factors affecting the menstrual resumption and to evaluate the pituitary response to gonadotropin - releasing hormone ( GnRH ) in FHA .
 Chemical: gonadotropin - releasing hormone; Chemical: GnRH
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: gonadotropin - releasing hormone; Chemical: GnRH