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The Sister Study

For Researchers

The Sister Study is a cohort of 50,884 women who did not have breast cancer at baseline but do have sisters diagnosed with breast cancer. Participants will be followed for a minimum of ten years. Detailed health information as well as information on a variety of exposures is being collected and proposals for collaborative studies or data requests are welcomed. The following pages provide additional information on study details that may be helpful for your study proposal.



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