Funding for this research was provided by:
National Basic Research Program of China (973 Program) (2017YFC0908800)
the “Beijing Municipal Administration of Hospitals” Ascent Plan (DFL20150601)
Jiangsu Youth Medical Talents Project (QNRC2016310)
Beijing Municipal Administration of Hospitals’ Mission plan (SML20180601)
Beijing Municipal Health Commission “Project of Science and Technology Innovation Center” (PXM2019_026272_000006, PXM2019_026272_000005)
Text and Data Mining valid from 2019-04-13
Received: 16 January 2019
Accepted: 2 April 2019
First Online: 13 April 2019
Ethics approval and consent to participate
: This study was complied with the Declaration of Helsinki and approved by the Institutional Ethics Committee of Beijing Anzhen Hospital. Written informed consent was not obtained from the participants, because of the data retrospectively obtained from electronic medical records.
: Not applicable.
: The authors declare that they have no competing interests.
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