1. The use of radiographic visualisation for prenatal diagnosis;Omenn, G.S.; Hall, J.G.; Graham, B.; Harp, L.,1977
2. Fetoscopy guided by real-time ultrasound for pure fetal blood samples, fetal skin samples and examination of the fetus;Rodeck, C.H.;Br J Obstet
3. Early prenatal diagnosis of neural tube defects by ultrasound-guided fetoscopy;Rodeck, C.H.; Campbell, S.;Lancet,1978