1. Anomalies of the ureter;Schussel,1998
2. Congenital abnormalities;Burton,1997
3. Ectopic ureter;Musi;Pediatr Med Chir,1989
4. Ureteral ectopia in vestibule without urinary incontinence;Koyanagi;Urology,1980
5. Ectopic ureter opening in the vestibule without urinary incontinence: a case report;Matsumoto;Hinyokika Kiyo,1996