REFERENCES
- Lund, C. J.: Pregnancy and heart disease. Clin Obstet Gynec 1: 41–52, 1958.
- Mendelson, C. L.: Cardiac Disease in Pregnancy: Medical Care, Cardiovascular Surgery and Obstetric Management as Related to Maternal and Fetal Welfare. Philadelphia, F. A. Davis Company, 1960, 371 pp.
- Gordon, C. A.: Heart disease as a cause of maternal death. Amer J Obstet Gynec 69: 701, 1955.