1057
For economical reasons , we could not send a questionnaire to all the 35 , 779 individuals , but based the investigation on a SRS of 4 , 000 men , post - stratified in a high - risk and a low - risk group .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None