1. Congenital prepubic sinus: possible variant of dorsal urethral duplication (Stephens type 2);Campbell;J Urol,1987
2. An unusual presentation of a urachal remnant;Crawford;Br J Urol,1989
3. Congenital prepubic sinus;Rozanski;J Pediatr Surg,1990
4. Prepublic sinus: an unusual urachal remnant;Lawson;Br J Surg,1992
5. Prepubic dermoid sinus: possible variant of dorsal urethral duplication (Stephens type 3);Park;J Pediatr Surg,1993