Funding for this research was provided by:
National Natural Science Foundation of China (81430042)
Special Foundation for Scientific Research of Health Care Industry (201202002)
Project of Technology Innovation in Priority Research Field of the First Affiliated Hospital of Third Military Medical University (SWH2016ZDCX4201)
New Clinical Technology of Military Medicine and Medical Care of War Injury Program of the First Affiliated Hospital of Third Military Medical University (SWH2016YSCXYB-0)
Received: 26 March 2018
Accepted: 26 April 2018
First Online: 23 May 2018
Ethics approval and consent to participate
: Collection of retrospective data was approved by the Institutional Review Board of the Southwest Hospital, the Third Military Medical University (Army Medical University). Patients or their legal representative are not informed that their data were collected for research purposes in this observational study.
: The authors declare that they have no competing interests.