-
Ultrasonographic prediction of early miscarriage.
Papaioannou GI, Syngelaki A, Maiz N, Ross JA, Nicolaides KH.
Hum Reprod 2011;26:1685-92. -
Normal ranges of embryonic length, embryonic heart rate, gestational sac diameter and yolk sac diameter at 6-10 weeks.
Papaioannou GI, Syngelaki A, Poon LC, Ross JA, Nicolaides KH.
Fetal Diagn Ther 2010;28:207-19.