Paran, H.; Butnaru, G.; Neufeld, D.; Magen, A.; Freund, U. (1999). "Enema-induced perforation of the rectum in chronically constipated patients". Diseases of the colon and rectum. 42 (12): 1609–1612. doi:10.1007/BF02236216. PMID 10613482.

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