- Correspondence to Dr Frederick S Southwick, Department of Medicine, University of Florida, 1600 Archer Rd, Box 100277, Gainesville, FL 32610, USA;
- Received January 19, 2015
- Revised May 20, 2015
- Accepted May 30, 2015
- First published June 19, 2015.
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.
- 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.