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D2d Study Results
About D2d
What is Prediabetes?
Type 2 Diabetes
Vitamin D and Calcium
For Participants
D2d Registry
Meet D2d Participants
Participant Newsletters
D2d Favorite Recipes
D2d Hemoglobin Variant Handouts
The D2d Story
The D2d Story
In the News
Publications
Sites
Study Organization
Current Members
Past Members
For Researchers
Ancillary Studies
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Data Sharing Policy
Contact D2d
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