- Correspondence to Dr Zhongmin Sun, Department of Respiration andCritical care medicine, The First hospital Affiliatedto School of Medicine of Xi’an Jiaotong University, Xi’an, Shaanxi, China;
- Accepted September 24, 2017
- First published November 14, 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.