Gestational dating and Down's syndrome screening.
Palomaki
G E
GE
Haddow
J E
JE
D004314:Down Syndrome / Q000175:diagnosis*; D005189:False Positive Reactions; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis; D000509:alpha-Fetoproteins / Q000032:analysis
D000509:alpha-Fetoproteins