The New England Journal of Medicine Downloaded from nejm.org at UNIVERSITY OF MICHIGAN on January 16, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at UNIVERSITY OF MICHIGAN on January 16, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at UNIVERSITY OF MICHIGAN on January 16, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at UNIVERSITY OF MICHIGAN on January 16, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at UNIVERSITY OF MICHIGAN on January 16, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at UNIVERSITY OF MICHIGAN on January 16, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at UNIVERSITY OF MICHIGAN on January 16, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

Prenatal genetic diagnosis in 3000 amniocenteses.

The New England Journal of Medicine Downloaded from nejm.org at UNIVERSITY OF MICHIGAN on January 16, 2015. For personal use only. No other uses witho...
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