1. Department of Cardiology, Middlemore Hospital, 100 Hospital Road, Otahuhu, Auckland 2025, New Zealand
2. Section of Epidemiology and Biostatistics, School of Population Health, Faculty of Medical and Health Sciences, School of Population Health, Grafton Campus, 22-30 Park Ave, Grafton, Auckland 1023, New Zealand
3. School of Medicine, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland 1023, New Zealand
4. National Institute for Health Innovation, School of Population Health, University of Auckland, 22 Park Avenue, Grafton, Auckland 1023, New Zealand