共 7 条
[1]
HEYL PS, 1990, OBSTET GYNECOL, V76, P1025
[2]
MACDONALD ML, 1991, OBSTET GYNECOL, V77, P63
[3]
NORGAARDPEDERSEN B, 1990, CLIN GENET, V37, P35
[4]
OSATHANONDH R, 1989, LANCET, V2, P52
[6]
SUCHY SF, 1990, OBSTET GYNECOL, V76, P20
[7]
MATERNAL SERUM UNCONJUGATED ESTRIOL AS AN ANTENATAL SCREENING-TEST FOR DOWNS-SYNDROME
[J].
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY,
1988, 95 (04)
:334-341