1. Caudal duplication syndrome;Dominguez;Am J Dis Child,1993
2. Caudal duplication;D'costa;Bombay Hosp J,2008
3. Duplication of the entire colon, bladder, and urethra;Ravitch;Surgery,1953
4. Anomalies and curiosities of medicine;Gould,1896
5. Complete duplication of the hindgut and lower urinary tract with diphallus;Azmy;J Pediatr Surg,1990