0002686 Prenatal maternal abnormality
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0011436 Abnormal maternal serum screening
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0008073 Low maternal serum estriol
0010570 Low maternal serum alpha-fetoprotein
0011432 High maternal serum alpha-fetoprotein
0011433 High maternal serum chorionic gonadotropin
0011434 Low maternal serum chorionic gonadotropin
0011435 Low maternal serum PAPP-A