National Institute of Environmental Health Sciences   —  National Institutes of Health   —  U.S. Department of Health and Human Services

The Sister Study

Ancillary Studies

Ancillary Studies

Four ancillary studies have been conducted that have involved additional data collection.  Brief descriptions of these studies can be found in the links below.

Link to Two Sister Study page Link to Mothers Validation page

Link to CDC Special Survey page Link to CDC Survivorship Survey page









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