Screening for maternal serum alpha-fetoprotein: what about the low side?
D000328:Adult; D002170:Canada; D004314:Down Syndrome / Q000517:prevention & control*; D005260:Female; D006801:Humans; D008403:Mass Screening; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011640:Public Policy; D000509:alpha-Fetoproteins / Q000032:analysis*
D000509:alpha-Fetoproteins