1Emergency Department, Peking Union Medical College Hospital, Beijing 100730, China
2Emergency Department, Beijing Hospital, National Center of Geriatrics, Beijing 100730, China
3Emergency Department, The First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China
4Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
5Emergency Department, Renmin Hospital of Wuhan University, Wuhan 430060, China
6Emergency Department, West China Hospital of Sichuan University, Chengdu 610041, China
7Emergency Department, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
8Emergency Department, Saint Louis University, Saint Louis, MO 63110, USA
9Emergency Department, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
10Emergency Department, PLA 263 Hospital, Beijing 101149, China
✉*XueZhong Yu: erxuezhongyu@sina.cn
Copyright © 2016 Yi Li et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
