- Correspondence to Dr Jialin Mao, Healthcare Policy and Research, Weill Cornell Medical College, New York, NY 10065, USA;
- Received May 26, 2018
- Revised September 26, 2018
- Accepted October 4, 2018
- First published November 10, 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.