1. School of Clinical Medicine, Faculty of Medicine, the University of Queensland , QLD, Brisbane, Australia
2. Department of Cardiology, The Prince Charles Hospital , 627 Rode Road, Chermside, QLD 4032, Brisbane, Australia
3. Department of Cardiovascular and Thoracic Surgery, Cardiovascular Centre, E Hospital , Hanoi, Vietnam
4. School of Medicine, Faculty of Health and Medical Sciences, the University of Adelaide , SA, Adelaide, Australia
5. Department of Cardiovascular Medicine, Flinders Medical Centre , SA, Australia
6. College of Medicine and Public Health, Flinders University , SA, Australia
7. Flinders Centre for Epidemiology and Biostatistics, College of Medicine and Public Health, Flinders University , SA, Australia
8. Respiratory and Sleep Services, Southern Adelaide Local Health Network , SA, Adelaide, Australia