- Correspondence to Dr L Elizabeth Goldman, Department of Medicine, University of California, San Francisco, 1001 Potrero Av, Ward 13, San Francisco, CA 94110, USA;
- Received 27 March 2015
- Revised 30 November 2015
- Accepted 1 December 2015
- Published in print 1 December 2016.
- Published online 18 November 2016.
- Published first 6 January 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.