- Correspondence to Marina Daskalopoulou, Royal Free Hospital, Rowland Hill Street, London NW3 2PF, UK;
- Received 29 November 2016
- Revised 12 April 2017
- Accepted 18 April 2017
- Published online 24 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.