-
Maternal cardiac function in twin pregnancy.
Kametas NA, McAuliffe F, Krampl E, Chambers J, Nicolaides KH.
Obstet Gynecol 2003;102:806-15. -
Assessment of endothelial function in normal twin pregnancy.
Savvidou MD, Donald AE, Nicolaides KH.
Ultrasound Obstet Gynecol 2001;17:220-3.