Current difficulties in use of maternal serum alpha-fetoprotein levels in counseling mid-trimester older pregnant women regarding risk of a Down syndrome fetus.
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Department of Social and Administrative Health Sciences, School of Public Health, University of California, Berkeley 94720.
D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005817:Genetic Counseling; D006801:Humans; D011247:Pregnancy / Q000097:blood*; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis; D012307:Risk Factors; D000509:alpha-Fetoproteins / Q000032:analysis*
D000509:alpha-Fetoproteins