[1] Prince Charles Hosp, Dept Med Imaging, Chermside, Qld 4032, Australia
[2] St Andrews Ipswich Private Hosp, Dept Gen Med, Ipswich, Qld, Australia
[3] Ipswich Hosp, Dept Gen Med, Ipswich, Qld, Australia
[4] Sir Charles Gairdner Hosp, Dept Resp Med, Nedlands, WA, Australia
[5] Curtin Univ, Div Hlth Sci, Perth, WA, Australia
[6] Univ Queensland, Fac Med, Herston, Qld, Australia