-
Screening for fetal abnormalities in multiple pregnancies.
Sebire NJ, Nicolaides KH.
Baillieres Clin Obstet Gynaecol 1998;12:19-36. -
Umbilical cord cysts in early pregnancy.
Ross JA, Jurkovic D, Zosmer N, Jauniaux E, Hacket E, Nicolaides KH.
Obstet Gynecol 1997;89:442-5.