- Correspondence to Dr Ruben Amarasingham, Parkland Center for Clinical Innovation, 6300 Harry Hines Blvd, Dallas, TX 75235, USA;
- Received February 10, 2013
- Revised June 12, 2013
- Accepted June 30, 2013
- First published July 31, 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 1
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.