1. Congenital heart disease;Oyama,2009
2. Congenital heart disease;Strickland,2008
3. Patent ductus arteriosus;Kittleson,1998
4. Retrospective study of congenital heart defects in 151 dogs;Tidholm;J Small Anim Pract,1997
5. Pathology of feline heart diseases;Liu;Vet Clin North Am,1977