Funding for this research was provided by:
Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support (No. ZYLX201504)
Wu Jieping Medical Foundation (No. 320.2710.1813)
National Key Technologies R&D Program (No. 2015BAI13B09)
Research Foundation of Beijing Friendship Hospital, Capital Medical University (No. yyqdkt 2017-31)
Text and Data Mining valid from 2018-12-08
First Online: 8 December 2018
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: Informed consent was obtained from all individual participants included in this study.
: This study was performed in accordance with the principles of the Declaration of Helsinki and was approved by the Ethics Committees of Beijing Friendship Hospital, Capital Medical University.