-
Crown-chin length in normal and anencephalic fetuses at 10-14 weeks gestation.
Sepulveda W, Sebire NJ, Fung TY, Pipi E, Nicolaides KH.
Am J Obstet Gynecol 1997;176:852-5. -
Prenatal diagnosis of triploidy during the second trimester of pregnancy.
Jauniaux E, Brown R, Rodeck C, Nicolaides KH.
Obstet Gynecol 1996;88:983-9.