1 Lancashire Cardiac Centre, Blackpool Victoria Hospital, Blackpool, United Kingdom; University of Newcastle-Central Coast Clinical School, Gosford, NSW, Australia. Electronic address: philomikhail@gmail.com.
2 Department of Cardiology, Northern Beaches Hospital, Frenchs Forest, NSW, Australia.
3 Department of Cardiology, Central Coast Local Health District, Gosford, NSW, Australia.
4 University of Newcastle-Central Coast Clinical School, Gosford, NSW, Australia; Department of Cardiology, Central Coast Local Health District, Gosford, NSW, Australia.