1. Resolution and display requirements for ultrasound Dop-pler/evaluation of the heart in children, infants and the unborn human fetus;Sahn;J Am Coll Cardiol,1985
2. Fetal echocardiography—a new frontier;DeVore;Clin Obstet Gynecol,1984
3. Intrauterine cardiothoracic surgery: the fetal lamb model;Turley;Ann Thorac Surg,1982
4. Biological effects of ultrasound;Maulik,1985
5. Pulsed Doppler fetal echocardiography;Huhta;J Clin Ultrasound,1985