共 8 条
[1]
DRUZIN ML, 1993, OBSTET GYNECOL, V81, P615
[4]
HADDOW JE, 1994, NEW ENGL J MED, V330, P114
[5]
PAUKER SP, 1987, GENETIC RISK RISK PE, P151
[6]
PHILLIPS OP, 1992, OBSTET GYNECOL, V80, P353
[7]
MATERNAL SERUM SCREENING FOR DOWNS-SYNDROME - THE EFFECT OF ROUTINE ULTRASOUND SCAN DETERMINATION OF GESTATIONAL-AGE AND ADJUSTMENT FOR MATERNAL WEIGHT
[J].
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY,
1992, 99 (02)
:144-149
[8]
1987, ACOG TECHNICAL B, V108, P1