1. Morbid Anatomy;Baillie, M.,1793
2. Boyd, L. J., and Scherf, D. (1942). Med. Clin. N. Amer., 26, 919.
3. Dressler, W., and Pfeiffer, R. (1940). Ann. intern. Med., 14, 100.
4. Eliaser, M., and Konigsberg, J. (1939). Arch intern. Med., 64, 493.
5. Ford, R. V., and Levine, H. D. (1949). Scientific Session Amer. Heart Assoc., p. 24.