- Correspondence to Dr Benjamin M Howard, Department of Surgery, Ward 3A San Francisco General Hospital, 1001 Potrero Avenue, Room 3C-38, San Francisco, CA 94110, USA;
- Received May 3, 2017
- Revised June 15, 2017
- Accepted June 26, 2017
- First published October 23, 2017.
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.