title: Invited commentary.
authors.affiliation: Department of Cardiothoracic Surgery, Columbia Presbyterian Medical Center, New York, NY 10032, USA. crs2@columbia.edu
authors.forename: Craig R
authors.initials: CR
authors.lastname: Smith
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001021:Aortic Valve / Q000601:surgery*; D006348:Cardiac Surgical Procedures / Q000379:methods; D002648:Child; D006801:Humans; D008875:Middle Aged