I. Parness

Echocardiographic diagnosis offetal heart defects in midtrimester

B. Benacerraf, S. Yeager, D. Colan, 1988 .

Sonography of the fetal heart: normal variants and pitfalls.

P. Doubilet, D. Disalvo, M. Frates, 1993, AJR. American journal of roentgenology.

Echocardiographic diagnosis of fetal heart defects in mid trimester.

S. Colan, S. Sanders, B. Benacerraf, 1988, Archives of disease in childhood.