1. Equine urogenital system;Sisson,1975
2. Urinary Tract;Schott,1996
3. Congenital urethrorectal fistulas;Chandler;Comp Cont Educ Pract Vet,2001
4. Anal agenesis with rectourethral fistula in a colt;Gideon;Vet Med,1977
5. Atresia ani and rectovaginal fistula in an acaudate filly;Chaudhry;Vet Rec,1980