- Correspondence to Dr Andrea Beaton, Division of Cardiology, Children’s National Health System, Washington DC 20010, USA;
- Received November 16, 2017
- Revised December 20, 2017
- Accepted December 21, 2017
- First published January 13, 2018.
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.