Funding for this research was provided by:
National Natural Science Foundation of China (91442120, 81771740)
the sub-project under the National Science Technology Pillar Program of China (2010CB529103)
Capital Health Research and Development of Special Fund Program (2011-4021-03)
Peking University Clinical Research Program (PUCRP201305)
Received: 10 February 2019
Accepted: 6 May 2019
First Online: 21 May 2019
Ethics approval and consent to participate
: The study protocol was approved by Institutional Medical Ethics Review Board of Peking University First Hospital (2014-785). Informed written consent was obtained from all study participants according to the principles of the Declaration of Helsinki.
: All of the subjects provided written informed consent for publication.
: The authors declare that they have no competing interests.
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