Second trimester prenatal ultrasound for the detection of pregnancies at increased risk of Trisomy 18 based on serum screening
2001 ◽
Vol 21
(1)
◽
pp. 46-51
◽
Keyword(s):
1999 ◽
Vol 19
(10)
◽
pp. 947-954
◽
2017 ◽
Keyword(s):
2020 ◽
1999 ◽
Vol 19
(5)
◽
pp. 476-479
◽