- Correspondence to Dr Eric D Bateman, Division of Pulmonology, Department of Medicine, University of Cape Town, Anzio Road, Observatory, Cape Town 7937, South Africa;
- Received March 19, 2013
- Revised October 28, 2013
- Accepted October 31, 2013
- First published November 19, 2013.
This web only file has been produced by the BMJ Publishing Group from an electronic file supplied by the author(s) and has not been edited for content.
Files in this Data Supplement:
- Data supplement 1 - Online supplement
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.