1803
The study included 60 gestational diabetic and 60 control women who attended the first - trimester combined screening program for Down syndrome between 11 and 14 gestational weeks with complete follow - up data and delivered in our institution .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None