Results 211 to 214 of about 13,436,684 (214)

Nasal bone in first-trimester screening for trisomy 21

American Journal of Obstetrics and Gynecology, 2006
Kypros Nicolaides, Karl Oliver Kagan
exaly  

Transvaginal ultrasonographic detection of congenital anomalies in the first trimester

American Journal of Obstetrics and Gynecology, 1990
Jacqueline Green, M T Cullen, Sandro Gabrielli   +2 more
exaly  

A five-year experience with second-trimester induced abortions: No increase in complication rate as compared to the first trimester

American Journal of Obstetrics and Gynecology, 1993
exaly  

Inaccurate estimation of risk in second trimester serum screening for Down syndrome among women who have already had first trimester screening

Prenatal Diagnosis, 2001
exaly