title: Invited Commentary.
authors.affiliation: Division of Cardiothoracic Surgery, University of North Carolina School of Medicine, 3041 Burnett-Womack Bldg, CB# 7065, Chapel Hill, NC 27599-7065. Electronic address: Jennifer_nelson@med.unc.edu.
authors.forename: Jennifer S
authors.initials: JS
authors.lastname: Nelson
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D006348:Cardiac Surgical Procedures / Q000379:methods*; D005260:Female; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D006801:Humans; D008297:Male; D011664:Pulmonary Valve / Q000637:transplantation*; D014694:Ventricular Outflow Obstruction / Q000601:surgery*