Comment on

• Noninvasive diagnosis by Doppler ultrasonography of fetal anemia due to maternal red-cell alloimmunization. Collaborative Group for Doppler Assessment of the Blood Velocity in Anemic Fetuses.

  Mari G, Deter RL, Carpenter RL, Rahman F, Zimmerman R, Moise KJ Jr, Dorman KF, Ludomirsky A, Gonzalez R, Gomez R, Oz U, Detti L, Copel JA, Bahado-Singh R, Berry S, Martinez-Poyer J, Blackwell SC. Mari G, et al. N Engl J Med. 2000 Jan 6;342(1):9-14. doi: 10.1056/NEJM200001063420102. N Engl J Med. 2000. PMID: 10620643 Clinical Trial.