9735
Efficacy was determined by responses to question 3 ( ability to achieve an erection ) and question 4 ( ability to maintain an erection ) of the 15 - item International Index of Erectile Function ( IIEF ) .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None