"There are legitimate reasons for this, so the child fits in with the already existing children in the family or so the child looks more like the social father, " said Mark Rothstein, director of the Institute for Bioethics, Health Policy and Law at the University of Louisville School of Medicine in Kentucky.

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Glenn Cohen, a lawyer and Co-Director of the Petrie-Flom Center for Health Law Policy, Biotechnology, and Bioethics at Harvard University and Eli Y.

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