1013
During the period of the survey , out of 492 patients with type 1 diabetes , 22 ( 4 . 5 % ) had a previous diagnosis of celiac disease .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None