(Q71955325)
Statements
Ultrasonographically adjusted midtrimester risk of trisomy 21 and significant chromosomal defects in advanced maternal age (English)
R O Bahado-Singh
O Deren
A Tan
R L D'Ancona
D Hunter
1 December 1996
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference