[1] Fiona Stanley Hosp, Dept Cardiol, Murdoch, WA, Australia
[2] Univ Western Australia, Med Sch, Crawley, WA, Australia
[3] Harry Perkins Inst Med Res, Murdoch, WA, Australia
[4] Fiona Stanley Hosp, Dept Radiol, Murdoch, WA, Australia
[5] Curtin Univ, Fac Hlth Sci, Bentley, WA, Australia
[6] Univ Western Australia, Harry Perkins Inst Med Res, Perth, Australia
[7] Univ Western Australia, Fiona Stanley Hosp, Perth, Australia