title: A nonnarrowing technique for implantation of the Duran flexible ring.
authors.affiliation: Department of Cardiovascular Surgery, Hospital Universitario Valdecilla, Santander, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Bernal
authors.forename: J M
authors.initials: JM
authors.lastname: Revuelta
mesh_terms: D004867:Equipment Design; D006801:Humans; D008943:Mitral Valve / Q000601:surgery*; D019736:Prostheses and Implants; D013536:Suture Techniques