1. Factors affecting risks of congenital malformations. I. Epidemiologic analysis;Chung;Birth Defects,1975
2. X-linked hydrocephalus;Shannon;J Med Genet,1968
3. Use of ultrasound in the prenatal diagnosis of congenital disorders;Campbell;Meth Cell Biol,1982
4. The prenatal detection of congenital malformations by ultrasonography;Hill;Mayo Clin Proc,1983
5. Evaluation of fetal intracranial anatomy by static and real-time ultrasound;Johnson;JCU,1980