Text and Data Mining valid from 2018-10-01
Received: 14 June 2018
Accepted: 25 September 2018
First Online: 1 October 2018
Ethics approval and consent to participate
: The study protocol was approved by Ethics Committees of both China-Japan Union Hospital and 302 Military Hospital on December 2016.
: Not applicable.
: The authors declare that they have no competing interests.
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