Funding for this research was provided by:
Natural Science Foundation of Beijing Municipality (7162081)
National Natural Science Foundation of China (81674034)
Text and Data Mining valid from 2019-12-01
Received: 26 December 2018
Accepted: 28 September 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: The study design and protocol were approved by the ethics committee of BJHTCM, which is affiliated to Capital Medical University (code 2016BL-047). All subjects signed informed consent before enrollment. The study was conducted in accordance with the principles of the Declaration of Helsinki (2004) and in accordance with the Medical Research Involving Human Subjects Act. The study was registered in the China Clinical Trial Registry Center (ChiCTR-INR-16010063) on 2 December 2016.
: All subjects who participated in the study signed informed consent forms. The patients agreed that information about them that was collected in this study could be published, however we would anonymize the data before publishing. The informed consent forms signed by the participants of this study are kept in the author’s institution and are available for review upon request from the editor-in-chief.
: The authors declare that they have no competing interests.