Second trimester maternal serum human chorionic gonadotropin and unconjugated oestriol levels in blacks and whites.
Simpson
J L
JL
Elias
S
S
Morgan
C D
CD
Shulman
L
L
Umstot
E
E
Andersen
R N
RN
D044383:Black People; D006063:Chorionic Gonadotropin / Q000097:blood*; D004964:Estriol / Q000097:blood*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D011247:Pregnancy / Q000097:blood*; D011262:Pregnancy Trimester, Second; D044465:White People
D006063:Chorionic Gonadotropin; D004964:Estriol