- Correspondence to Dr Zackary D Berger, Division of General Internal Medicine, Department of Medicine, The Johns Hopkins Outpatient Center, 601 North Caroline Street, Suite 7143, Baltimore, MD 21287-0941, USA;
- Received December 18, 2012
- Revised November 18, 2013
- Accepted November 22, 2013
- First published December 13, 2013.
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.