1. Successful completion of pregnancy in a patient with a Hufnagel valve;Canfield;California Med.,1958
2. Congenital heart disease and pregnancy;Cannell;Am. J. Obst. & Gynec.,1963
3. Relief of angina and congestive heart failure by a Hufnagel valve: Subsequent term pregnancy;Crockett;Am. Heart J.,1959
4. Pregnancy and aortic insufficiency: Term pregnancy in a patient with a Hufnagel valve;Gorman;Obst. & Gynec.,1962
5. Pregnancy and prosthetic heart valves. Report of successful pregnancies in 2 patients with Starr-Edwards aortic valves;Ueland;Obst. & Gynec.,1966