1. Bargen, J. A. Arch. Surg. 17:561, 1928.
2. Am. Lecture Series;J. A. Bargen,1951
3. Bargen, J. A., andSauer, W. G. Clinics 3, 516 1944.
4. Bargen, J. A.,et al. Gastroenterology 26:32, 1954.
5. Bockus, H. L. Gastro-enterology. Philadelphia, Saunders, 1943.