title: Letter regarding article by Gammie et al, "influence of hospital procedural volume on care process and mortality for patients undergoing elective surgery for mitral regurgitation".
authors: Jeffrey H
authors: JH
authors: Shuhaiber
authors: Hans
authors: H
authors: Shuhaiber
mesh_terms: D006760:Hospitalization; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000401:mortality* / Q000601:surgery*