- Correspondence to Dr Ralph A H Stewart, Green Lane Cardiovascular Service, Auckland City Hospital, Park Road, Grafton, Auckland 1142, New Zealand;
- Received 26 December 2016
- Revised 12 April 2017
- Accepted 17 April 2017
- Published online 15 November 2017.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.