- Correspondence to Dr M Justin Byron, Department of Family Medicine, School of Medicine, University of North Carolina, Chapel Hill, North Carolina 27599, USA ;
- Received October 30, 2017
- Revised December 27, 2017
- Accepted January 3, 2018
- First published January 23, 2018.
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.