- Correspondence to Pin Pin Pek, Department of Emergency Medicine, Singapore General Hospital, Singapore 169608, Singapore;
- Received March 14, 2017
- Revised February 14, 2018
- Accepted February 26, 2018
- First published March 15, 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.