- Correspondence to Dr Matthew Hansen, Department of Emergency Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Pk Rd, Mailcode CR 114, Portland, OR 97239, USA;
- Received July 30, 2015
- Revised January 9, 2016
- Accepted January 12, 2016
- First published February 23, 2016.
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.