title: Invited commentary.
authors.affiliation: Division of Cardiovascular Surgery, The Hospital for Sick Children, 555 University Ave, Ste 1525, Toronto, Ontario M5G 1X8, Canada. Electronic address: glen.vanarsdell@sickkids.ca.
authors.forename: Glen
authors.initials: G
authors.lastname: Van Arsdell
mesh_terms: D058366:Blalock-Taussig Procedure / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D010166:Palliative Care / Q000379:methods*; D011666:Pulmonary Valve Stenosis / Q000601:surgery*; D013771:Tetralogy of Fallot / Q000601:surgery*; D014694:Ventricular Outflow Obstruction / Q000503:physiopathology*