14728
A matched case - control study from the OFELY cohort was conducted in 63 OB women ( BMI > 30 , mean age69 +/- 8 years ) age - matched with 126 NW women ( 19 < BMI < 25 ) .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None