1. Patent ductus arteriosus in the dog: Characteristics of occurrence and results of surgery in one hundred consecutive cases;Eyster;J Am Vet Med Assoc,1976
2. Outcomes of thoracic surgery in dogs and cats;Bellenger;Aust Vet J,1996
3. Patent ductus arteriosus;Buchanan;Semin Vet Med Surg Small Anim,1994
4. Patent ductus ar-teriosus in the dog: A retrospective study of radiographic, epidemio-logic, and clinical findings;Ackerman;Am J Vet Res,1978