Article History
Received: 8 June 2018
Accepted: 19 September 2018
First Online: 11 October 2018
Ethics approval and consent to participate
: This study followed the tenets of the Declaration of Helsinki and approved by the institutional ethics committee of the Fourth Affiliated Hospital of China Medical University. Informed written consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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