[1] Royal Brisbane & Womens Hosp, Heart Failure Serv, Brisbane, Qld 4092, Australia
[2] Royal Brisbane & Womens Hosp, Dept Internal Med & Aged Care, Brisbane, Qld 4092, Australia
[3] Prince Charles Hosp, Adv Heart Failure & Cardiac Transplant Unit, Brisbane, Qld 4032, Australia
[4] Univ New England, Sch Rural Med, Armidale, NSW, Australia