Funding for this research was provided by:
National Key Research&Development Program of China (2016YFC1307200)
Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support (ZYLX201607)
Dengfeng Talent Support Program of Beijing Municipal Administration of Hospitals (DFL20151801)
Received: 11 February 2018
Accepted: 11 December 2018
First Online: 9 January 2019
Ethics approval and consent to participate
: This study is approved by the ethics review committee of the Beijing Anding Hospital (No. 2016–106, Beijing, China). All participants are free to withdraw at any time during the study.All participants will be recruited following an informed consent process involving an approved plain language statement and consent form.
: Not applicable.
: We have read and understood TRIALS’s policy on declaration of interests and we declare that we have no competing interests.
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