REFERENCES
- Bockus, H. L.: Gastro-enterology. Philadelphia, W. B. Saunders Company, 1943–1944, vol. 1, page 171, and vol. 2, p. 203.
- Ritvo, M. and Shauffer, I. A.: Gastrointestinal X-ray Diagnosis. Philadelphia, Lea & Febiger, 1952, p. 175.
- Walters, W., Gray, H. K. and Priestley, J. T.: Carcinoma and Other Malignant Lesions of the Stomach. Philadelphia, W. B. Saunders Company, 1942, p. 506.