Affiliation: | (1) Department of Obstetrics and Gynecology, Georgetown University School of Medicine, Washington, D.C.;(2) Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina;(3) Division of Genetic Counseling, School of Public Health, University of California at Berkeley, Berkeley, California;(4) Department of Pediatrics, University of Medicine and Dentistry, N.J. Medical School, Newark, New Jersey;(5) Department of Philosophy, Kennedy Institute of Ethics, Georgetown University, Washington, D.C. |