title: Expert opinion is often hot air: It is not the air; it is the clinical evidence.
authors.affiliation: Division of Cardiothoracic Surgery, Ronald Reagan UCLA Medical Center; David Geffen School of Medicine at UCLA, Los Angeles, Calif. Electronic address: Rshemin@mednet.ucla.edu.
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Shemin
mesh_terms: D006348:Cardiac Surgical Procedures / Q000379:methods*; D006801:Humans; D008943:Mitral Valve / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000601:surgery*; D014261:Tricuspid Valve / Q000601:surgery*; D014262:Tricuspid Valve Insufficiency / Q000601:surgery*