1. Department of Cardiology Middlemore Hospital, Otahuhu Auckland New Zealand
2. Department of Cardiology Waikato Hospital Hamilton New Zealand
3. Waikato Clinical School, Faculty of Medicine and Health Sciences University of Auckland
4. Section of Epidemiology and Biostatistics, School of Population Health University of Auckland Auckland New Zealand
5. Department of Cardiology Auckland City Hospital Auckland New Zealand
6. Department of Cardiology Christchurch Hospital Christchurch New Zealand
7. University of Otago Christchurch New Zealand
8. Department of Cardiology Wellington Hospital Wellington New Zealand
9. Department of Cardiology Tauranga Hospital Tauranga New Zealand
10. Department of Medicine University of Auckland New Zealand