REFERENCES
- Helmholz, H. F.: Chronic ulcerative colitis in childhood. Am. J. Dis. Child. 26:418–430 (November) 1923.
- Jackman, R. J., Bargen, J. A. and Helmholz, H. F.: Life histories of ninety-five children with chronic ulcerative colitis: A statistical study based on comparison with a whole group of eight hundred and seventy-one patients. Am. J. Dis. Child. 59:459–467 (March) 1940.
- Benson, R. E. and Bargen, J. A.: Chronic ulcerative colitis as a cause of retarded sexual and somatic development. Gastroenterology 1:147–159 (February) 1943.