Funding for this research was provided by:
the National Key Research and Development Program of China (2016YFC0103003)
Beijing Municipal Science & Technology Commission (Z171100001017197)
the National Natural Science Foundation of China (31771045)
Article History
Received: 5 September 2018
Accepted: 4 December 2018
First Online: 15 December 2018
Ethics approval and consent to participate
: This research study was approved by China-Japan Friendship Hospital Ethics Committee. All participants signed written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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