Maternal serum-free beta-human chorionic gonadotrophin level: the effect of sample transportation.
Cuckle
H S
HS
Department of Clinical Medicine, University of Leeds, UK.
Jones
R G
RG
D000328:Adult; D001800:Blood Specimen Collection; D006063:Chorionic Gonadotropin / Q000097:blood*; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012044:Regression Analysis; D012307:Risk Factors; D013997:Time Factors
D006063:Chorionic Gonadotropin