1. delphia: WB Saunders, 1992, p647. catheter techniques, stents have been used to maintain patency
2. disease.In:Proceedings of the 10th ACVIM Forum, 1992, p213. methods of valve replacement and repair have been investi
3. delphia: WB Saunders, 1995, p892. and occlusion of patent ductus arteriosus (PDA). This chapter