Human Chorionic Gonadotropin (hCG)hCG (Human Chorionic Gonadotropin) Test, Pregnancy Test ReferencesCitationsAmerican College of Obstetricians and Gynecologists
(2007). Screening for fetal chromosomal abnormalities. ACOG Practice Bulletin
No. 77. Obstetrics and Gynecology, 109(1): 217–227.
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