title: The double sewing ring technique: a not so easy reoperation!
authors.forename: Mohammad Hossein
authors.initials: MH
authors.lastname: Mandegar
authors.forename: Farideh
authors.initials: F
authors.lastname: Roshanali
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D001705:Bioprosthesis; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D006801:Humans; D011475:Prosthesis Failure; D012086:Reoperation; D013536:Suture Techniques