title: Invited commentary.
authors.affiliation: Division of Cardiac Surgery, Children's National Medical Center, 111 Michigan Ave NW, Washington, DC 20010, USA. rjonas@cnmc.org
authors.forename: Richard
authors.initials: R
authors.lastname: Jonas
mesh_terms: D001011:Aorta / Q000601:surgery*; D021921:Aortic Stenosis, Supravalvular / Q000601:surgery*; D006348:Cardiac Surgical Procedures / Q000379:methods*; D006801:Humans; D010496:Pericardium / Q000637:transplantation; D019651:Plastic Surgery Procedures; D014183:Transplantation, Heterologous