References
- Hernadi L, Torocsik M. Screening for fetal anomalies in the 12th week of pregnancy by transvaginal sonography in an unselected population. Prenat Diagn 1997; 17(8)753–9
- Economides DL, Braithwaite JM. First trimester ultrasonographic diagnosis of fetal structural abnormalities in a low risk population. Br J Obstet Gynaecol 1998; 105(1)53–7
- Whitlow BJ, Chatzipapas IK, Lazanakis ML, Kadir RA, Economides DL. The value of sonography in early pregnancy for the detection of fetal abnormalities in an unselected population. Br J Obstet Gynaecol 1999; 106(9)929–36
- Carvalho MH, Brizot ML, Lopes LM, Chiba CH, Miyadahira S, Zugaib M. Detection of fetal structural abnormalities at the 11–14 week ultrasound scan. Prenat Diagn 2002; 22(1)1–4
- Guariglia L, Rosati P. Transvaginal sonographic detection of embryonic-fetal abnormalities in early pregnancy. Obstet Gynecol 2000; 96(3)328–32
- Nicolaides KH. Nuchal translucency and other first-trimester sonographic markers of chromosomal abnormalities. Am J Obstet Gynecol 2004; 191(1)45–67
- Ferencz C, Rubin JD, McCarter RJ, Brenner JI, Neill CA, Perry LW, et al. Congenital heart disease: prevalence at livebirth. The Baltimore-Washington Infant Study. Am J Epidemiol 1985; 121(1)31–6
- Pradat P. Epidemiology of major congenital heart defects in Sweden, 1981–1986. J Epidemiol Community Health 1992; 46: 211–5
- Taipale P, Ammala M, Salonen R, Hiilesmaa V. Learning curve in ultrasonographic screening for selected fetal structural anomalies in early pregnancy. Obstet Gynecol 2003; 101(2)273–8
- Weisz B, Pajkrt E, Jauniaux E. Early detection of fetal structural abnormalities. Reprod Biomed Online 2005; 10: 541–53