title: Invited commentary.
authors.affiliation: Division of Cardiothoracic Surgery, Emory University School of Medicine, 1365A Clifton Road, NE, Atlanta, GA 30322, USA. thomas.vassiliades@emoryhealthcare.org
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Vassiliades
mesh_terms: D000818:Animals; D001705:Bioprosthesis; D002417:Cattle; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D011664:Pulmonary Valve / Q000601:surgery*; D012756:Sheep; D015607:Stents