1. 1. Langer JC. Hirschsprung disease. Pediatric surgery. In: Coran AG, edr. 7th edn. Philadelphia: Elsevier Saunders 2012.
2. 2. Hirschsprung H. Stuhltragheit neugeborner in folge von dilatation and hypertrophie des colons. Jahrbuch für Kinderheilkunde und physische Erziehung, Berlin. 1888;27:1-7.
3. 3. De la Torre L, Santos K, Vargas-Gonzalez R. Hirschsprung disease. Evaluation of calretinin and S-100 as ancillary methods for the diagnosis of aganglionosis in rectal biopsies. Acta Pediátrica de México 2012;33(5):246-51.
4. 4. Odze RD, Goldblum JR. Surgical pathology of the GI tract, liver, biliary tract and pancreas. 2nd edn. Philadelphia: Saunders 2009:131-3.
5. 5. Muller CO, Mignot C, Belarbi N, et al. Does the radiographic transition zone correlate with the level of aganglionosis on the specimen in Hirschsprung's disease? Pediatr Surg Int 2012;28(6):597-601.