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Maternal cardiac function in twin pregnancy.
Kametas NA, McAuliffe F, Krampl E, Chambers J, Nicolaides KH.
Obstet Gynecol 2003;102:806-15. -
Distribution of fetal erythroblasts enriched from maternal blood in multifetal pregnancies.
Al-Mufti R, Hambley H, Farzaneh F, Nicolaides KH.
Hum Reprod 2003;18:1933-6.