title: Current difficulties in use of maternal serum alpha-fetoprotein levels in counseling mid-trimester older pregnant women regarding risk of a Down syndrome fetus.
authors: Department of Social and Administrative Health Sciences, School of Public Health, University of California, Berkeley 94720.
authors: E B
authors: EB
authors: Hook
mesh_terms: 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*
chemical_list: D000509:alpha-Fetoproteins