- Correspondence to Dr Tom Boyles, Department of Medicine, University of Cape Town, Groote Schuur Hospital, Cape Town, South Africa, 7295;
- Accepted 19 June 2017
- Published in print 1 August 2017.
- Published online 26 July 2017.
- Published first 17 July 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.