DOI: 10.1055/s-00000009

American Journal of Perinatology

References

Official Statement AIUM.
Statement on the Safe Use of Doppler Ultrasound During 11–14 week scans (or earlier in pregnancy). Approved 4/18/2011; Revised 3/21/2016, 10/30/2016.
Available at:
http://www.aium.org/officialStatements/42 . Accessed June 5, 2018

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