REFERENCES
- Kampmeier, R. H.: Clinical history. J. Tennessee M. A. 43:425 (November) 1950.
- Herrick, J.: Some features of present day diagnosis. J.A.M.A. 3:981–986 (September 10) 1938.
- Risak, E.: Der Klinische Blick. Vienna, Julius Springer, 1937.
- Marshall and Hall: Practice of Medicine, Ed. American by Bigelow, J. and Holmes, Oliver Wendell, 1839.
- Nibhaus, F. W. and Wright, W. D.: Facts and fallacies about the normal apex beat. Am. Heart J. 30:604–609 (December) 1945.