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Respiratory function in singleton and twin pregnancy.
McAuliffe F, Kametas N, Costello J, Rafferty GF, Greenough A, Nicolaides K.
BJOG 2002;109:765-9. -
Monozygotic twins discordant for body stalk anomaly.
Daskalakis GJ, Nicolaides KH.
Ultrasound Obstet Gynecol 2002;20:79-81.