Prospective intervention trial of a screening protocol to identify fetal trisomy 18 using maternal serum alpha-fetoprotein, unconjugated oestriol, and human chorionic gonadotropin

1992 ◽  
Vol 12 (11) ◽  
pp. 925-930 ◽  
Author(s):  
Glenn E. Palomaki ◽  
George J. Knight ◽  
James E. Haddow ◽  
Jacob A. Canick ◽  
Devereux N. Saller ◽  
...  
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