[1] Royal N Shore Hosp, Dept Cardiol, Sydney, NSW, Australia
[2] Royal N Shore Hosp, Dept Infect Dis, Sydney, NSW, Australia
[3] Royal N Shore Hosp, Dept Radiol, Sydney, NSW, Australia
[4] Royal Prince Alfred Hosp, Dept Radiol, Sydney, NSW, Australia
[5] Univ Sydney, Kolling Inst, N Shore Heart Res Grp, Sydney, NSW 2006, Australia