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This was a small follow-up study of female DZ twins who had previously participated in a study examining the association between androgens and breast cancer. Study participants were sent a survey by mail which asked questions about their handedness, footedness and eye dominance. As most of these twins had not participated in the SSAGA study these participants were also sent a kit for collecting fingerprints which contained a one use ink pad and instructions. The study was designed by Sarah Medland
and Amanda Baxter coordinated the data entry and
study management. |
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