1. Congenital obstruction of the small intestine;Ladd;J.A.M.A.,1933
2. Zur Entwicklungsgeschichte des menschlichen Duodenum in frühen Embryonalstudien;Tandler;Morph. Jahrb.,1902
3. Case of congenital defect of the duodenum, in which bile was found both above and below the absent portion;Cockayne;Brit. J. Child. Dis.,1917
4. Prepyloric diaphragm, an unusual abnormality: a case report;Gerber;Arch. Surg.,1965
5. Congenital prepyloric gastric atresia;Brown;Am. J. Dis. Child.,1959