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Wiley, Ultrasound in Obstetrics and Gynecology, S1(40), p. 31-31, 2012

DOI: 10.1002/uog.11320

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OC15.04: Operator-specific PAPP-A and free beta-hCG MoM values as a method of individual audit of CRL measurements at the NT scan. National data from 171,469 pregnancies

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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