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First trimester maternal uterine artery Doppler examination in HIV-positive women.
Savvidou M, Samuel M, Akolekar R, Poulton M, Nicolaides K.
HIV Med 2011;12:632-6. -
A model for a new pyramid of prenatal care based on the 11 to 13 weeks' assessment.
Nicolaides KH.
Prenat Diagn 2011;31:3-6.