9003
RESEARCH DESIGN AND METHODS A retrospective cohort comprised the records of 58 singleton pregnancies in obese women ( BMI >= 30 kg / m ( 2 ) ) with type 2 diabetes giving birth between 2008 and 2011 .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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