Funding for this research was provided by:
International Cooperation and Exchange Programme (81561128015)
National Key R&D program of China (2018YFC0116800)
Basic-Clinical Cooperation Program from Capital Medical University (PYZ2018056)
Text and Data Mining valid from 2019-05-28
Received: 13 February 2019
Accepted: 1 May 2019
First Online: 28 May 2019
Ethics approval and consent to participate
: The study was conducted with the approval from the Ethics Committee of Beijing Tongren Hospital, Capital Medical University, and adhered to the Declaration of Helsinki. Written informed consent was obtained from each participant.
: All of the authors gave their consent to the publication. No conflict of interest exits in the submission of this manuscript, and this manuscript is approved by all of the authors for publication. The work described was original research that has not been published previously, and is not under consideration for publication elsewhere, in whole or in part.
: The authors declare that they have no competing interests.
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