1. From the Department of Cardiothoracic Surgery, St. Vincent’s Hospital Melbourne, Fitzroy, Victoria (L.S., A.S., A.N.); Cardiology Unit, South Eastern Sydney and Illawarra Health Network, Wollongong, NSW (A.S., R.M.); and University of Melbourne Department of Surgery, St Vincent’s Hospital Melbourne, Fitzroy, Victoria, Australia (A.N.).