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3. Potts, W. J.: Personal Communication, February 1959.
4. Functional intestinal obstruction as a congenital neurogenic basis in infancy;Zuelzer;Amer. J. Dis. Child.,1948
5. Hirschsprung's disease with ganglion cell aplasia of the colon and terminal ileum;Sandegard;Acta Chirurg. Scand.,1953