-
Umbilical cord diameter at 11-14 weeks of gestation: relation to chromosomal defects.
Rembouskos G, Cicero S, Papadopoulos V, Tripsanas C, Nicolaides KH.
Ultrasound Obstet Gynecol 2004;23:237-9. -
Maternal cardiac function during pregnancy at high altitude.
Kametas NA, McAuliffe F, Krampl E, Chambers J, Nicolaides KH.
BJOG 2004;111:1051-8.