- Correspondence to Miss Lin Pang, Department of Paediatrics, Beijing Ditan Hospital, Capital Medical University, Beijing, China;
- Received January 16, 2017
- Revised July 23, 2017
- Accepted August 26, 2017
- First published September 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.